A 4-Inch Refractor Can Be An Excellent Deep-Sky Telescope: “Finally Sirius B”

Posted December 9, 2014 by rogerivester
Categories: Uncategorized

Originally posted on rogerivester:


Heavy duty Celestron CGE Pro Mount…


“Finally….after more than 35 years, I was able to see Sirius B, better known as the “Pup.”

Date of observation:  March 14th 2012

Telescope:  4-inch Orion/Vixen f/9.8 achromatic refractor

Conditions:  Excellent seeing and transparency 

Location:  My moderately light polluted backyard in the foothills of western North Carolina   

How did I become interested in this famous star and its faint companion?  I purchased my first serious telescope in 1977, which was a 4 1/4-inch f/10, Edmund Scientific reflector.  Even though this was not my first choice for a telescope, it was the best my budget would allow at the time.  I really wanted the 6-inch Edmund f/8 EQ reflector.  

I started reading everything about astronomy I could find, and really liked “The Edmund Sky Guide”  by Terence Dickinson and Sam Brown.  There was a paragraph or two, concerning Sirius and its…

View original 1,457 more words

NGC 7640 – Galaxy in Andromeda

Posted November 15, 2014 by rogerivester
Categories: Observers Challenge

Pencil sketch of NGC 7640, using a 10-inch reflector at 183x. 


Image compliments of  Dr. James Dire from Hawaii:


Observers Challenge Report:  OCTOBER 2014 OBSERVERS CHALLENGE – NGC-7640-2

Visual description:  10-inch reflector at 183x from my moderately polluted backyard, this galaxy is faint with an overall low surface brightness.  It is elongated NNW-SSE, with a subtle brightening in the central region, and is situated inside a triangle of three fairly faint stars.  roger  

M30 – Globular Cluster in Capricornus

Posted October 28, 2014 by rogerivester
Categories: Observers Challenge


Pencil sketch using a 10-inch Newtonian reflector @ 195x


Image by Dr. James Dire of Hawaii using a 190 mm Maksutov-Newtonian telescope.

To read the full report, click on the following link:


Bright and well concentrated globular cluster. Using a 10-inch reflector, at 195x some partial resolution of stars. The cluster is elongated E-W, with two distinct star chains radiating out toward the N and NW. A fainter chain extends NNE. The most northerly chain is comprised of four stars. When using a 102 mm refractor, the star chains could not be seen, but the edges appear very irregular, with a brighter middle, and with an E-W elongation.

M30 has always been one of my favorite globular clusters, due in part to the unique star chains extending out from the very bright central region.    Roger Ivester

NGC 6822, Barnard’s Galaxy – Sagittarius – Difficult and faint with very low surface brightness

Posted September 28, 2014 by rogerivester
Categories: Observers Challenge

The following sketch was made using a No.2 pencil, a 5 x 8 blank note card with the colors inverted using a computer. 

Rogers NGC-6822

The following image, courtesy of Dr. James Dire of Hawaii, using a 190 mm Maksutov-Newtonian telescope. 


Read the complete Las Vegas Astronomical Observers Challenge Report, click on the following link: 


An evening of observing at Lost Arrow Ranch, located in the foothills of western North Carolina

Posted September 21, 2014 by rogerivester
Categories: Observers Challenge, Uncategorized

On Saturday, September 20th, members of the Cleveland County Astronomical Society met at the Lost Arrow ranch for an evening of observing.  Owners, Mike and Jackie Price have provided this excellent dark sky site for our use for many years.  This is a fabulous and beautiful site…


M 101 Galaxy in Ursa Major – Face-on spiral with low surface brightness.

Posted September 6, 2014 by rogerivester
Categories: Uncategorized


Pencil sketch with inverted colors

Rogers M-101 3

Original sketch:


A good quality telescope can provide a lifetime of observing – The following picture is a vintage Meade DS-10A, on a Celestron CGE Pro mount

Posted August 19, 2014 by rogerivester
Categories: Uncategorized

I purchased this 10-inch classic Newtonian reflector (Meade model DS-10A) almost 25 years ago and it continues to be the telescope I use the most.  It  was the following advertisement that caught my eye in the late 80’s.  I wanted the DS-16A, but I knew it would be too heavy and large, so I would later choose the 10-inch version.

Click on the photo’s to enlarge:




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