NGC 1003 – Galaxy In Perseus: Observer’s Challenge Report #118 – December 2018

Posted December 7, 2018 by rogerivester
Categories: Work File Only - Observer's Challenge Reports

The Observer’s Challenge Report in its entirety:

december 2018 observers challenge – ngc-1003

Notes and sketch by Sue French from New York:

I went out on December 4th to observe NGC 1003, which was my first clear, moonless night since October 30th.  Apparently the weather gods have a wry sense of humor, since this was my wedding anniversary.  We took out my homemade 254/1494mm Newtonian (10-inch f/5.8).  The seeing was fair, the transparency good, and the ground was covered with snow. 

The night was slightly breezy and the temperature 19 ºF.  At 68×NGC 1003 is a faintly visible oval near a 10th-magnitude star to its west-southwest.  At 187× the galaxy is nearly uniform in brightness, and a faint star appears along its northern flank. The galaxy looks more flocculent at 299×, and a slightly brighter region rests between the two flanking stars. The sketch was done at this magnification.   Sue French 

Re: Comet 46P Wirtanen:

We also looked at Comet 46P Wirtanen through Alan’s 15×50 image-stabilized binoculars.  

Pencil sketch by Sue French: 

N1003 pos5

 

Pencil sketch by Roger Ivester using a 10-inch Newtonian reflector @ 114x, from a 5.0 NELM location.  

NGC 1003

rogers ngc-1003 inverted

NGC 1003 image by Mario Motta from Massachusetts:

Equipment:  SBIG 100E camera and 32-inch f/6 

I could’t use many subs, had some tracking issues and need to work on my declination axle motor to worm coupling. The tracking seems to bounce a bit N-S, and stars are a  bit bloated, so this is not my best effort.  The time was about 40 minutes for a total of 5 min subs only.  Mario 

NGC1003

 

NGC 1003 image by Doug Paul from Massachusetts:

400mm camera lens f/2.8, iso800, 73subsx30s=36.5min, 100% scale.  Doug 

ngc1003rc

 

 

A Refractor Telescope Story, By Guest Host, Sue French, New York

Posted November 12, 2018 by rogerivester
Categories: Uncategorized

Roland Christen and I met in 1980 at Stellafane and became friends. Sometime later, Roland said he had two sets of NASA glass to make triplet refractors.  He planned to make one lens for himself and sell the second set of glass.  I talked him into selling it to Alan. 

Alan still hadn’t gotten around to making the lens by 1987, so I said that I knew Roland would like to see that lens in a scope, and if Alan wasn’t going to tackle it himself, we should ask Roland how much he’d want to turn it into a lens for us.  Roland made us promise to take the scope to the next Stellafane. It took us quite a while to get a tube, and after that we only had a few months before the convention.  I was still painting parts at the motel we were staying at when we got to Stelli.   Sue French 

image001

 

NGC 147 and NGC 185 – Galaxies in Cassiopeia – November 2018 Observer’s Challenge Report #117

Posted October 29, 2018 by rogerivester
Categories: Work File Only - Observer's Challenge Reports

 NOVEMBER 2018 OBSERVERS CHALLENGE – NGC-147  

Calculating the surface brightness magnitudes:  

Information from Observing handbook and Catalog of Deep-Sky Objects” by Christian B. Luginbulh and Brian A. Skiff :  

“The surface brightness magnitudes (sfc. br.), also from the * RC2, represent the brightness (in V or B, depending on the color of the integrated magnitude ) of a square arc minute patch averaged over the galaxy within the dimensions given for each.  Since this value is an average, the central parts of the galaxy will typically have higher surface brightness and the outer parts lower.”

For complete information concerning (sfc. br.) refer to pages 10-11 Observing Handbook and Catalog of Deep-Sky Objects.”   Luginbuhl and Skiff. 

* RC2 =  “….nearly all data on galaxies are from the Second Reference Catalogue of Bright Galaxies (RC2) by de Vaucouleurs, de Vaucouleurs and Corwin, and the Southern Galaxy Catalog (SGC) by Corwin, de Vancouleurs, and de Vancouleurs.” 

Images provided by Mario Motta from Massachusetts using a 32-inch reflector. 

Photographic information:  NGC  147 was a total of 70 minutes, taken August 10, 2015 with my 32 inch, SBIG STL camera 1001E.  NGC 185 was taken August 15, 2015 total of 50 minutes (must have had a bad frame and dropped, I almost always do at least 60 minutes)   Mario Motta

NGC 147:  Visual magnitude 9.5,   (sfc. br.) 14.5  

2169290_2_NGC147

NGC 185:  Visual magnitude 9.2,   (sfc. br.) magnitude 14.3 

2169290_3_NGC185

Observing notes and pencil sketches by Sue French from New York:

254/1494mm Newtonian

43×: By sweeping westward from Omicron Cassiopeiae, NGC 185 is immediately visible ensconced in a isosceles triangle of three 8th- to 10th-magnitude stars, the brightest one golden.

68×: The sketch was done at this magnification, where NGC 185 and NGC 147 just fit together in the 72 arcminute field of view.  NGC 185 has a small core that grows gently brighter toward the center. NGC 147 is more slender than its companion and very faint.  There’s a dim star superimposed on NGC 147, barely west of the galaxy’s center. Both galaxies lean roughly northeast by east, with plump NGC 185 have a slightly greater position angle. Most of the stars visible near the galaxies were sketched, but far too many showed in the richly populated Milky Way for me sketch all the field stars.   Sue French 

Pencil sketch with inverted colors:  SF 

image001

image002

 

Observing notes and pencil sketches by Roger Ivester

NGC 147, with a 10-inch reflector is very difficult at 57x, and best observed at magnifications of 114x and 160x from my 5.0 NELM backyard.  The galaxy is very faint and difficult, due to the extremely low surface brightness.  Elongated NE-SW, without concentration, with a faint star located almost in the halo to the north.  On nights of fair transparency, I’ve been unable to see this galaxy.  A dark sky is essential to successfully observe this object.  

The first time I observed this galaxy was in on October 12th 1993.  My note at that time:  10-inch reflector @ 57x, faint, and difficult with very low surface brightness.  At 95x, still dim, but noted an elongation of NE-SW, low surface brightness, and mostly featureless.  When first observing both NGC 147 and NGC 185 almost twenty five years ago, I used the photo’s in Burnham’s Celestial Handbook to verify my find.   

NGC 185, using a 10-inch reflector at 114x, shows this galaxy as large, mostly round and on nights of excellent transparency, a subtle center brightness.  Far easier and brighter than NGC 147.   Roger Ivester  

 

Pencil sketches:  

NGC 147
Rogers NGC-0147 Inverted
NGC 185
Rogers NGC-0185 Inverted

 

NGC 7129: Cluster+Nebula In Cepheus, October 2018 Observer’s Challenge Report #116

Posted October 26, 2018 by rogerivester
Categories: Work File Only - Observer's Challenge Reports

OCTOBER 2018 OBSERVERS CHALLENGE – NGC-7129

The Observer’s Challenge report is currently “in-progress” and will be posted when all participant reports are received, so please check back.  

NGC 7129: Cluster + Nebula.  Magnitudes;  nebula 11.5;  stars 10 

Image by Mario Motta from Massachusetts: 

30 minutes luminance, 15 minutes each of red-green-blue filters, total 75 minutes imaging.  The image was taken with a 32 inch f/6 reflector. 
A difficult object, and could not use narrowband filters as NGC 7129 is a reflection nebula.  I used color filters, but with the bright stars in the image allowed star bloat, so subs had to be short, 3 minutes each.   Mario Motta 

NGC7129

 

254 mm  1494 focal length  f/5.9  Newtonian Reflector – Notes and sketches by Sue French from New York 

43x: Swept up by moving 1.4 degrees west from the pretty blue and gold optical double Argyle 43 (ARY 43; WDS magnitudes 6.4, 6.8; separation 100 arcseconds).  The nebula appears fairly faint but is readily visible.

115x: The sketch was mostly executed at this magnification, but it was slightly touched up in a couple places at 213x. The brightest part of the nebula occupies a region that includes four stars. The northernmost star in the haze is very dim and couched in its own tiny halo of light.  It stands out better at the higher power. Insubstantial mist trails west-southwest from the main mass, but its extent and form are difficult to perceive.  The southernmost star on the sketch glows with a golden hue.   Sue French 

Pencil sketch with inverted colors:  SF

NGC 7129 inv

 

NGC 7129

 

Notes and sketches by Roger Ivester from North Carolina

In my 10-inch reflector a cluster of four brighter stars with some fainter members, enveloped by nebulosity with greater concentration around the two northernmost stars.  The nebula has fairly high surface brightness, and easy to see at 57x, but best seen at 114x, and without any type of filter.  The sparse cluster and nebulosity is very easy to locate and see, and stands out prominently in the star field.   Roger Ivester 

Pencil sketch using a 10-inch reflector @ 114x.   RI

NGC 7129 Sketch

Pencil sketch with inverted colors:   RI 

Rogers NGC-7129 Inverted

 

NGC 6818 – Planetary Nebula – Sagittarius – September 2018 – Observer’s Challenge Report #115

Posted October 12, 2018 by rogerivester
Categories: Work File Only - Observer's Challenge Reports

SEPTEMBER 2018 OBSERVERS CHALLENGE – NGC-6818

Pencil sketch from the eyepiece using a 5 x 8 blank notecard, and 6-inch f/6 reflector @ 129x

NGC 6818 Sketch

Pencil sketch averted color

Rogers NGC-6818 Inverted

 

Planetary Nebula IC 1295 In Scutum: August 2018 Observer’s Challenge Report

Posted September 20, 2018 by rogerivester
Categories: Work File Only - Observer's Challenge Reports

AUGUST 2018 OBSERVERS CHALLENGE – IC-1295-1

Image by Mario Motta from Massachusetts, using a 32-inch reflector

IC1295

Messier 4 – Globular Cluster in Scorpius – July 2018 Observer’s Challenge Report

Posted August 24, 2018 by rogerivester
Categories: Work File Only - Observer's Challenge Reports

Click on the following link for the complete report:  

JULY 2018 OBSERVERS CHALLENGE – M-004

Notes from my backyard:

Globular cluster, M4 is easy to see with a 60 mm refractor, appearing as a faint circular glow at low magnification.  When using a 3.5-inch Maksutov-Cassegrain at 78x, there is a resolve of some of the brighter members.  The cluster has a subtle elongated shape.  A very faint chain of stars was noted in the central region, oriented N-S.  With 102 mm refractor, there is a greater number of stars resolved within the cluster, and much greater concentration of stars, elongated and with more stars in the central chain. A prominent double star is located on the SE edge.   

10-inch reflector at 140x, excellent resolve of the cluster. The center chain of stars is very bright and with many stars counted, both in the central region and around the outer edges.  A chain of stars makes an arc, the entire length of the cluster on the NW side.  The elongation shape becomes much more apparent with the larger aperture.      Roger Ivester 

Pencil sketch with the colors inverted using a 102 mm refractor @ 140x 

Rogers M-004 Inverted