A Circle Of Mushrooms Called A Fairy Ring In Old World Europe: In Astronomy Known As The Cygnus Fairy Ring

Posted September 10, 2016 by rogerivester
Categories: The Cygnus Fairy Ring - Asterism in Cygnus

The following pencil sketch of an asterism known as the Cygnus Fairy Ring. I was using a 10-inch Newtonian @ 57x with a 1.1º true field of view, a blank 5 x 8 note card with the colors inverted using a scanner.  Only a No. 2 pencil and an eraser were used.           

Scanned Image 160890002

While riding my bicycle on an August 2016 day: I came across an area beside the road with a true 360º Fairy Ring, and just had to stop and take a photo. I’ve seen partial rings many times, even in my backyard, but this one made a perfect circle, and with more mushrooms than I could count.

There’s much folklore and legends from ancient Europe, concerning those that venture into a Fairy Ring; with some being transported to another world…or worse!

Stories from hundreds of years ago of those walking in the deep-woods of Transylvania, in the southwest region of Romania in the Carpathian Mountains, and encountered a fairy ring, and never returned! This is where the stories of the real Vlad Dracula originated! However, these stories could be just that…folklore, and legends.

Yes, Count Dracula was based on a real historical person, Vlad III, also known as Vlad the Impaler or Vlad Dracula, who ruled as the Prince of Wallachia (in modern-day Romania) during the 15th century. Source AI

Back to my bicycle ride on that day in August 2016:

"Plucked from the Fairy Circle" A man saves his friend from the grip of a fairy ring.

“Plucked from the Fairy Circle” A man saves his friend from the grip of a fairy ring.  Public Domain

The Importance of Documenting Observations For Future Reference And Observing With A Purpose

Posted February 5, 2016 by rogerivester
Categories: Roger's Articles

Observing with a purpose for me, is having an objective or agenda for observing. This might be to observe the Messier catalog, the Herschel-400 list or even some personal lists of objects. If you can’t decide what to observe: The Astronomical League has plenty to consider.

Some of my observing notes, pencil sketches and deep-sky articles as following:

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     When I purchased my first serious telescope in March 1977, one of first observing reference books was “The Finest Deep-Sky Objects” by James Mullaney and Wallace McCall.  This book featured observing notes for double stars, galaxies, nebulae, star clusters, and a few prominent red stars.

“1,000+ The Amateur Astronomer’s Field Guide to Deep-Sky Observing” by Tom Lorenzin:

      In the early 90’s I began using “1000+” almost exclusively. I really liked how Tom documented his observations, which were relatively brief, but saying so much.  

Visual observing for me is attempting to see the faintest of detail in deep-sky objects, then recording in words, and for some objects, making a pencil sketch.  

Roger Ivester

An few examples as following of my pencil sketches and observing notes:

Iota Cas Roger inv

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Rogers M-081 Inverted

Rogers NGC-2300 Inverted

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Roger IC 1805

M13 And The Elusive Propeller

Pacman Nebula - NGC 281

Virgo Diamond - five stars

Scanned Image 120080000

Roger Ivester: Christian; Cyclist; Amateur Astronomer; Freelance Writer; Student Of History And Other…

Posted December 15, 2015 by rogerivester
Categories: Roger's Articles

The late Al Nagler (optical engineeer, founder and owner of Televue Optics) and myself at the 2017 Southern Star Astronomy Convention in Little Switzerland, North Carolina.

The 6-inch f/6 Newtonian pictured below is now my largest telescope. After 34 years and more than 1,500 hours under a night sky, my 10-inch Newtonian became just too large and heavy for regular use.

My other hobby is cycling, with approximately 135,000 miles logged to date as of August 2026. I began riding in June 1979, never imagining—or even considering how many miles I might eventually accumulate.

It wasn’t until I reached 60,000 miles, as I turned into my driveway one day, that the thought occurred to me: 100,000 miles might actually be possible. I would eventually reach that milestone, but it took another 29 years. In October 2009, I finally logged my 100,000th mile.

A few examples of my deep-sky pencil sketches as following. I don’t embellish or use computer enhancements.

M71 Globular Cluster in Sagitta

Galaxy NGC 2859 in Leo Minor

NGC 1931: Bright Nebula + Star Cluster

Veil Nebula East:

Veil Nebula West:

Observer’s Challenge Reports For The Years 2009-2024: All 185 Monthly Reports Are Included For Future Reference Use.

Posted November 6, 2015 by rogerivester
Categories: Observer's Challenge Reports Complete

Tags:

During the winter of 2007, while visiting family in Las Vegas, I became a member of the Las Vegas Astronomical Society. Fellow member, Fred Rayworth and I often talked about starting a monthly observing report.

So, in February 2009, we issued the first Las Vegas Astronomical Society Observer’s Challenge Report. The many reports to follow would include galaxies, nebulae, star clusters and multiple stars.  However, in the recent years the name was changed to just “The Observer’s Challenge Report.”

We designed the report primarily to promote visual observing, while allowing amateurs the opportunity to share their observations and work. The report has since become quite popular and includes participants from all across the country and beyond.

We are also attempting to keep the ancient art of pencil sketching alive.  A facet of astronomy that was employed by Messier, the Herschel’s and so many others over the past 200 years.

I think we can all agree that interest in serious visual observing and pencil sketching has declined significantly, especially in the past 25 years.  

And the challenge report has inspired me to take my telescope outside, even when I would much rather have stayed inside…and others have told me the same.

As of October 2019, Sue French, former editor at Sky & Telescope Magazine became part of the administration of the report, after being a participant for many years.

Official statement regarding the final Observer’s Challenge report:

Sue French and myself have decided this month (June 2024) will be the last and final Observer’s Challenge report.  

This is for many reasons, which includes the time required each and every month.  And it often interferes with personal time, such as vacations, especially during the summer months, and just having the burden to compile a monthly report.

I would like to thank Fred Rayworth, who in 2009, with myself established the report from Las Vegas.  It was originally designed to promote visual observing.  Fred resigned from the the administration of the report in 2019. After years of being a part and participate of the report, Sue French graciously assumed Fred’s place, upon his leaving.  I must mention, if not for Fred, establishing the basis format for the report and sharing with the LVAS the report would not have started.

The report has had readership in most all US states, and more than 100 foreign countries in the past 15 plus years.  

As of today (J28th 2026) the Observer’s Challenge report has had more than 150,000 worldwide .Pdf downloads.

There has never been anything like the Observer’s Challenge, lasting 185 consecutive months, and not likely will there be anything like it in the future. 

During this 15 plus years period, there have been participants summiting observing reports from the following states:

North Carolina, Nevada, New York, Texas, South Carolina, Massachusetts, Maine, Virginia, Pennsylvania, Delaware, Arizona, Florida, Alabama, Oklahoma and possibly a few others that I might have missed.

And then there were entries from the following countries: France, Italy, South Africa, Romania, Jordan, Lebanon, England and a few others.

It’s my hope that amateurs will use the following 185 Observer’s Challenge reports for personal reference and sharing with others…

Roger Ivester

NGC 6118 Galaxy In Serpens 6

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april-2024-observers-challenge-hickson-44-b

march-2024-observers-challenge-ngc-2440c-4

february-observers-challenge-ngc-1579a

2024-observers-challange-ngc-936-and-ngc-941

december-2023-observers-challenge-_ic-1848-2

november-2023-observers-challenge-_ic-10-1

october-2023-observers-challenge-_ngc-7027-3

september-2023-observers-challenge-_ngc-6891

august-2023-observers-challenge-_m56

july-2023-observers-challenge-_ngc-6217

june-2023-observers-challenge-_ngc-5774-and-5775

may-2023-observers-challenge-_ngc-4088

april-2023-observers-challenge-_ngc-3044b

march-2023-observers-challenge-_ngc-2841d

february-2023-observers-challenge-_ngc-2024

january-2023-observers-challenge-_ngc-1245b

december-2022-observers-challenge-_iota-cas-b

november-2022-observers-challenge-_ngc-7184b-1

October 2022 OBSERVERS CHALLENGE _M39 b

September 2022 OBSERVERS CHALLENGE _NGC 6751b

August 2022 OBSERVERS CHALLENGE _NGC 6772

July 2022 OBSERVERS CHALLENGE _NGC 6210b

June 2022 OBSERVERS CHALLENGE _NGC5474b

May 2022 OBSERVERS CHALLENGE _M106c

April 2022 OBSERVERS CHALLENGE _NGC 3079 c

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February 2022 OBSERVERS CHALLENGE _M42 & M43 PDF

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December 2021 OBSERVERS CHALLENGE _NGC 16

November 2021 OBSERVERS CHALLENGE _NGC 7662 b

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September 2021 OBSERVERS CHALLENGE _NGC 6823 & Sh 2-86

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july-2021-observers-challenge-_ngc-6572-1

june-2021-observers-challenge-_ngc-5746

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April 2021 OBSERVERS CHALLENGE _NGC 3226_NGC 3227

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February 2021 OBSERVERS CHALLENGE _NGC 1893 and IC 410

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December 2020 OBSERVERS CHALLENGE _M76

November 2020 OBSERVERS CHALLENGE _NGC 278

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September 2020 OBSERVERS CHALLENGE _Veil Nebula

August 2020 OBSERVERS CHALLENGE _M20

July 2020 OBSERVERS CHALLENGE _M8 

June 2020 OBSERVERS CHALLENGE _NGC 5689

May 2020 OBSERVERS CHALLENGE _M85 and NGC 4394

April 2020 OBSERVERS CHALLENGE _ NGC 3877

March 2020 OBSERVERS CHALLENGE _ NGC 2859

February 2020 OBSERVERS CHALLENGE _ NGC 1931

JANUARY 2020 OBSERVERS CHALLENGE _ NGC 1999

DECEMBER 2019 OBSERVERS CHALLENGE – IC-1805

NOVEMBER 2019 OBSERVERS CHALLENGE – NGC-246

OCTOBER 2019 OBSERVERS CHALLENGE – NGC-7448

SEPTEMBER 2019 OBSERVERS CHALLENGE – M-071

AUGUST 2019 OBSERVERS CHALLENGE – M-011

JULY 2019 OBSERVERS CHALLENGE – NGC-6482

JUNE 2019 OBSERVERS CHALLENGE – NGC-5377

MAY 2019 OBSERVERS CHALLENGE – NGC-4036-41

APRIL 2019 OBSERVERS CHALLENGE – NGC-2964-68

MARCH 2019 OBSERVERS CHALLENGE – NGC-2300

FEBRUARY 2019 OBSERVERS CHALLENGE – NGC-2175

JANUARY 2019 OBSERVERS CHALLENGE – NGC-1514

DECEMBER 2018 OBSERVERS CHALLENGE – NGC-1003

NOVEMBER 2018 OBSERVERS CHALLENGE – NGC-147

OCTOBER 2018 OBSERVERS CHALLENGE – NGC-7129

SEPTEMBER 2018 OBSERVERS CHALLENGE – NGC-6818

AUGUST 2018 OBSERVERS CHALLENGE – IC-1295

JULY 2018 OBSERVERS CHALLENGE – M-004

JUNE 2018 OBSERVERS CHALLENGE – M-051

MAY 2018 OBSERVERS CHALLENGE – NGC-4236

APRIL 2018 OBSERVERS CHALLENGE – M-081-82

MARCH 2018 OBSERVERS CHALLENGE – NGC-2371-72

FEBRUARY 2018 OBSERVERS CHALLENGE – M-041

JANUARY 2018 OBSERVERS CHALLENGE – NGC-1624

DECEMBER 2017 OBSERVERS CHALLENGE – NGC-0925

NOVEMBER 2017 OBSERVERS CHALLENGE – NGC-0772

OCTOBER 2017 OBSERVERS CHALLENGE – M-015

SEPTEMBER 2017 OBSERVERS CHALLENGE – NGC-6905

AUGUST 2017 OBSERVERS CHALLENGE – M-024

JULY 2017 OBSERVERS CHALLENGE – M-014

JUNE 2017 OBSERVERS CHALLENGE – NGC-6015

MAY 2017 OBSERVERS CHALLENGE – M-098

APRIL 2017 OBSERVERS CHALLENGE – NGC-3395-96

MARCH 2017 OBSERVERS CHALLENGE – M-067

FEBRUARY 2017 OBSERVERS CHALLENGE – WINTER ALBIREO

JANUARY-2017-OBSERVERS-CHALLENGE-NGC-1545

DECEMBER-2016-OBSERVERS-CHALLENGE-M-74

NOVEMBER-2016-OBSERVERS-CHALLENGE-NGC-0206

OCTOBER-2016-OBSERVERS-CHALLENGE-NGC-7479

SEPTEMBER-2016-OBSERVERS-CHALLENGE-NGC-7009

AUGUST-2016-OBSERVERS-CHALLENGE-CHAPLES-ARC

JULY 2016 OBSERVERS CHALLENGE – M-092

JUNE 2016 OBSERVERS CHALLENGE – M-005

MAY 2016 OBSERVERS CHALLENGE – M-100

APRIL 2016 OBSERVERS CHALLENGE – NGC-3077

MARCH 2016 OBSERVERS CHALLENGE – NGC-2392

FEBRUARY 2016 OBSERVERS CHALLENGE – NGC-2237

JANUARY 2016 OBSERVERS CHALLENGE – M-078

DECEMBER 2015 OBSERVERS CHALLENGE – NGC-1023

NOVEMBER 2015 OBSERVERS CHALLENGE – NGC-7789

OCTOBER 2015 OBSERVERS CHALLENGE – NGC-7128

SEPTEMBER 2015 OBSERVERS CHALLENGE – NGC-7000

AUGUST 2015 OBSERVERS CHALLENGE – M-016

JULY 2015 OBSERVERS CHALLENGE – NGC-6503

JUNE 2015 OBSERVERS CHALLENGE – M-083

MAY 2015 OBSERVERS CHALLENGE – NGC-4244

APRIL 2015 OBSERVERS CHALLENGE – NGC-3184

MARCH 2015 OBSERVERS CHALLENGE – NGC-2683

FEBRUARY 2015 OBSERVERS CHALLENGE – NGC-2158

JANUARY 2015 OBSERVERS CHALLENGE – NGC-1569

DECEMBER 2014 OBSERVERS CHALLENGE – NGC-0672

NOVEMBER 2014 OBSERVERS CHALLENGE – NGC-0404

OCTOBER 2014 OBSERVERS CHALLENGE – NGC-7640

SEPTEMBER 2014 OBSERVERS CHALLENGE – M-030

AUGUST 2014 OBSERVERS CHALLENGE – NGC-6822

JULY 2014 OBSERVERS CHALLENGE – M-101 NGC 5457

JUNE 2014 OBSERVERS CHALLENGE – M-53 NGC – 5053

MAY 2014 OBSERVERS CHALLENGE – NGC- 4284 – 4290

APRIL 2014 OBSERVERS CHALLENGE – NGC-3893-3896

MARCH 2014 OBSERVERS CHALLENGE – NGC-2359

FEBRUARY 2014 OBSERVERS CHALLENGE – NGC-1664

JANUARY 2014 OBSERVERS CHALLENGE – NGC-1491

DECEMBER 2013 OBSERVERS CHALLENGE – NGC-40

NOVEMBER 2013 OBSERVERS CHALLENGE – IC-1747

OCTOBER 2013 OBSERVERS CHALLENGE – IC-5146

SEPTEMBER 2013 OBSERVERS CHALLENGE – NGC-7044

AUGUST 2013 OBSERVERS CHALLENGE – NGC-6791

JULY 2013 OBSERVERS CHALLENGE – NGC-5981 5982 5985

JUNE 2013 OBSERVERS CHALLENGE – NGC-5466

MAY 2013 OBSERVERS CHALLENGE – PORRIMA

APRIL 2013 OBSERVERS CHALLENGE – NGC-2672

MARCH 2013 OBSERVERS CHALLENGE – M-46 NGC-2438

FEBRUARY 2013 OBSERVERS CHALLENGE – MEL-71

JANUARY 2013 OBSERVERS CHALLENGE – NGC-1579

DECEMBER 2012 OBSERVERS CHALLENGE – NGC-457

NOVEMBER 2012 OBSERVERS CHALLENGE – NGC-55

OCTOBER 2012 OBSERVERS CHALLENGE – NGC-7023

SEPTEMBER 2012 OBSERVERS CHALLENGE – NGC-6826

AUGUST 2012 OBSERVERS CHALLENGE – M-22

JULY 2012 OBSERVERS CHALLENGE – M-17

JUNE 2012 OBSERVERS CHALLENGE – NGC-5353

MAY 2012 OBSERVERS CHALLENGE – M-64

APRIL 2012 OBSERVERS CHALLENGE – NGC-3115

MARCH 2012 OBSERVERS CHALLENGE – NGC-2362

FEBRUARY 2012 OBSERVERS CHALLENGE – THETA ORIONIS

JANUARY 2012 OBSERVERS CHALLENGE – NGC-1502

DECEMBER 2011 OBSERVERS CHALLENGE – M-33

NOVEMBER 2011 OBSERVERS CHALLENGE – NGC-281

OCTOBER 2011 OBSERVERS CHALLENGE – NGC-7380

SEPTEMBER 2011 OBSERVERS CHALLENGE – NGC-6946

AUGUST 2011 OBSERVERS CHALLENGE – NGC-6819

JULY 2011 OBSERVERS CHALLENGE – NGC-6645

JUNE 2011 OBSERVERS CHALLENGE – M-102

MAY 2011 OBSERVERS CHALLENGE – M-97

APRIL 2011 OBSERVERS CHALLENGE – NGC-3190

MARCH 2011 OBSERVERS CHALLENGE – NGC-2419

FEBRUARY 2011 OBSERVERS CHALLENGE – NGC-2261

JANUARY 2011 OBSERVERS CHALLENGE – NGC-1333

DECEMBER 2010 OBSERVERS CHALLENGE – M-77

NOVEMBER 2010 OBSERVERS CHALLENGE – IC-342

OCTOBER 2010 OBSERVERS CHALLENGE – NGC-6888

SEPTEMBER 2010 OBSERVERS CHALLENGE – NGC-7331

AUGUST 2010 OBSERVERS CHALLENGE – NGC-188

JULY 2010 OBSERVERS CHALLENGE – NGC-6543

SUMMER 2010 SUPPLEMENTAL OBSERVERS CHALLENGE – NGC-6826

JUNE 2010 OBSERVERS CHALLENGE – NGC-5907

MAY 2010 OBSERVERS CHALLENGE – NGC-4631

APRIL 2010 OBSERVERS CHALLENGE – NGC-4889

SPRING 2010 SUPPLEMENTAL OBSERVERS CHALLENGE – M-51

MARCH 2010 OBSERVERS CHALLENGE – IC-405 IC-410 NGC 1893a

FEBRUARY 2010 OBSERVERS CHALLENGE – NGC-2903 and SUPPLEMENTAL

JANUARY 2010 OBSERVERS CHALLENGE – NGC-2264

DECEMBER 2009 OBSERVERS CHALLENGE – NGC-474

NOVEMBER 2009 OBSERVERS CHALLENGE – NGC-891

OCTOBER 2009 OBSERVERS CHALLENGE – NGC-253

SEPTEMBER 2009 OBSERVERS CHALLENGE NGC-7293

AUGUST 2009 MONTHLY OBSERVERS CHALLENGE – M-002

JULY 2009 OBSERVERS CHALLENGE – M-27

JUNE 2009 MONTHLY OBSERVERS CHALLENGE – M-13

MAY 2009 OBSERVERS CHALLENGE – LEO TRIO

APRIL 2009 OBSERVERS CHALLENGE – MARKHARIANS CHAIN

SPRING 2009 OBSERVERS CHALLENGE SUPPLEMENTAL – VIRGO DIAMOND

MARCH 2009 OBSERVERS CHALLENGE NGC-2403

FEBRUARY 2009 OBSERVERS CHALLENGE M-1

Phillip Ivester and James Caserio Drag Racing: By Roger Ivester

Posted July 25, 2015 by rogerivester
Categories: Roger's Articles

Phillip Ivester has had excellent success in drag racing, winning “an amazing” 164 events.  He has also built many race engines and helped others into the world of drag racing.  It’s been more than five years now when he began working with Dr. James Caserio, MD from Hendersonville.

Dr C. as he’s known by had been racing for years earlier, and now no one can drive his 1350 horsepower Hellcat Challenger as well as he can. His fastest time has been 6.00 seconds at 120 miles per hour in only 1/8 mile, or 660 feet. The car with driver and fuel weighs in at a very heavy, 4650 pounds! With this amount of horsepower and weight, breakage of critical parts have and are bound to happen on occasion.

It should be noted that Dr. Caserio has “most likely” saved the lives of at least two Pro Motorcyclist, at Shady Side Drag Strip. This drag strip is located only a few miles south of Boiling Springs, North Carolina.

Back to the motorcyclists crashes:

Dr. C. knew exactly how to best treat the traumatic injuries sustained by the crashes at well over 100 MPH. His many years as a doctor and emergency room physician, served him well for these two horrific and critical injuries. And this was on site at the drag strip, providing life saving treatment on the ground…not in an emergency room!

Following photo: This is not just a Hellcat, but a (Demonized Hellcat) which indicates the car has received  performance modifications, and now has well over 1,140 horsepower (at the rear wheels). The engine has 1,350 HP!    

Below photo:  Whipple Supercharger….not your standard supercharger!   

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IMG_1693

Thursday night, March 31st 2022 at Shady Side Dragway in Boiling Springs, North Carolina:

Dr. C and Phillip work together to insure that the Hellcat is always ready to race…  

Phillip and Dr. C

Phillip Ivester

Phillip Photo

Dr. C with white-coat

Dr. C and his Hellcat with Phillip and both of his race cars.

Three Cars
Screenshot 2020-07-08 at 5.27.40 PM

Heating up the rear tires for better traction…

Screenshot 2020-07-08 at 5.33.23 PM

A few snapshots of family and other.

Posted May 28, 2015 by rogerivester
Categories: Roger's Articles

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My west coast granddaughter, Zoe with her 76mm Orion Telescope.  

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My son, Chad, daughter-in-law, Tina, and grandkids.  Zoe is below, visiting a beauty Salon. 

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Zoe and her Dad in California after a bit of face painting. 

East Coast grandkids:  L-R:  Anna-Grace, John-Winston, Isaac, and Elisha…

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My wife Debbie, with a 1997 Orion/Vixen 102mm refractor, which allowed me to  see Sirius B 

Roger Ivester And Zoe

This is one of my favorite pictures from 2011.  Zoe and I were at the Red Rock Canyon visitors center, just outside of Las Vegas. 

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“A moment in time” when I was able to have all of my grandkids together in South Carolina.  The vintage 60mm refractor telescope shown was a gift to the kids by a good friend.  

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My two sons, Roger Chadwick (L) and Bradley Jason.  I’m really fortunate to have sons like these guys.  It’s difficult for them to get together as Chad lives on the East Coast and Brad on the West Coast.  A very special photo to me…

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Hey…this is me, working on an astronomy article at the coffee shop on a cold day with light snow.     

FullSizeRenderAnna-Grace…aggravating one of her brothers, John-Winston.

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Our Dachshund, Nova Sophia.

My First and Second Telescopes From The 1970’s

Posted February 3, 2015 by rogerivester
Categories: Roger's Articles

The telescope to the right is my first serious telescope which I purchased in March of 1977, an Edmund Scientific 4.25-inch f/10 reflector.  

Realizing the need for more aperture, I purchased a 6-inch Criterion RV-6 a year or so later.  My oldest son standing beside both telescopes, in 1978 and 1979 respectively…  

favorite-telescopes-from-the-past

Some of my favorite snapshots From Years Past

Posted February 13, 2014 by rogerivester
Categories: Roger's Articles

Granddaughter in Red Rock Canyon, Nevada

A memorable meeting with John Dobson: 

John Dobson

 

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NGC 281 “The Pacman Nebula” – Orion Telescope and Binoculars Article

Posted October 4, 2013 by rogerivester
Categories: Roger's Articles

Emission nebula, NGC 281, located in Cassiopeia is an early to late fall object that you don’t want to miss.  It can be glimpsed through an 8 x 50 finder, however, an 8-inch with an O-III filter is required to see the unique shape.  When you see this nebula for the first time…you’ll know why it’s called the “Pacman Nebula.”  

Click on the Orion Telescope and Binoculars link below for the full article.  

http://www.telescope.com/October-Deep-Sky-Challenge-NGC-281-The-Pacman-Nebula/p/103501.uts

Pencil sketch using a No. 2 pencil and a blank 5 x 8 notecard

Pacman Nebula - NGC 281

Image by Dr. James Dire using an Orion 190 mm Maksutov-Newtonian Telescope.

NGC281_LR

To read what others say about this most interesting object, click on the Las Vegas Astronomical Society link:

NOVEMBER 2011 OBSERVERS CHALLENGE – NGC-281

How to Clean a Telescope Mirror That Will Exceed Your Expectations and Will “Do No Harm”

Posted March 18, 2013 by rogerivester
Categories: How to Clean a Telescope Mirror

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     The following is the method I’ve used many times over many years to “successfully” clean telescope mirrors.  

     I reviewed a variety of sources to get my ideas. 

Materials:

Cotton balls  (100% cotton)  – Be sure to store the cotton balls in a sealed zip-lock bag

Blower bulb from a photo supply shop

100% Camel hair brush – Do not touch the bristles with your fingers or hands, and be sure to keep the brush or brushes in a sealed bag. 

Three gallons of distilled water

One teaspoon of liquid “Ivory” dishwashing detergent

Two clean folded bath towels  (not to have been washed using fabric softener) 

     First, wash your hands and remove all rings.   (You may  use surgical gloves if you so desire)

     Now its time to remove the mirror cell (with mirror) from the telescope.  Using a permanent marker, mark two lines on the side of the mirror and also on the cell.  This will allow the same mirror/cell orientation after the cleaning process.  Carefully remove the mirror from the cell.  Tilt the mirror on its side and blow any loose particles from the surface with the blower bulb.  Now, take the camel hair brush, and using care, very lightly “whisk” the surface, removing any loose debris or particles that might have remained.  

     Typically the mirror cleaning process is carried out in the kitchen sink.  It’s best to wash the sink thoroughly using dishwashing detergent and rinsing with water from the faucet.  After this, wipe the sink with alcohol to remove any oil or grease residue.  Place one of the folded towels in the sink and carefully lay the mirror on the towel.  Turn on the water and flood the mirror surface for a couple of minutes.  

      Next, plug the sink, pour one teaspoon of liquid dishwashing detergent while filling with water.  The water level should be about 1/2 to one-inch above the mirror, and let soak for about five minutes.  

     Secure a cotton ball by the corner to insure that finger oil is not deposited onto the mirror.  Now saturate a cotton ball with water and pull across the mirror…using only the weight of the saturated cotton ball. 

Use common sense to determine, as to how many cotton balls are needed.  At one time, I used one cotton ball per crossing, but this might be a bit excessive.  I now make multiple strokes with a saturated cotton ball.  Use as many cotton balls as you think necessary….cotton balls are very inexpensive.  It’s very important the mirror be totally submerged during this step!         

      If the mirror is really dirty, I’ve found it necessary to use the same procedure, but pulling the cotton balls crossways.  Since the mirror is already in the water, I think this is a necessary step to insure that the mirror is throughly cleaned.  

      The rinse process:  Turn on the faucet and flood the mirror, and then gently put one hand under the mirror and lift out of the water.  However, if you have very hard water, it would be best to use distilled water rather than from the facet.  Caution!  Be careful not to hit the faucet with the mirror.

      Rinse the mirror for at least two minutes, turn off the faucet, and immediately begin pouring one gallon of distilled water over the mirror for the final rinse.  Now…pour an entire bottle of 91% isopropyl alcohol over the mirror as the final rinse.  

      Carefully position the mirror onto the second folded towel at an angle to allow the remaining 91% isopropyl to drain from the surface.  You can use the blower bulb to chase remaining drops of alcohol over the edge.  Do not use any other means to dry the mirror.  

      You’re almost through:  Now, carefully install the mirror back into the cell using the alignment marks.   You are now ready to tighten the mirror clips.  I use a sheet of notebook paper as a gauge.  I leave just enough space between the clips and the mirror to be able to slide a corner of  the notebook paper between the two.  This will leave a very tiny amount of space.  The clips should not be tightened down against the mirror, as their only purpose is to keep the mirror secure, but not tight.  This will insure that the mirror is not stressed, especially during temperature changes. They should, however, be tight enough to keep the mirror from moving or “flopping around” in the cell.  The clips should have cork pads glued onto the area that touches the mirror. 

      Disclaimer:  This method has allowed me to clean telescope mirrors with excellent results.  It should, however, be noted that your results may vary.  Mirrors coatings are very delicate…be very careful and use good common sense and care.   

Roger Ivester