rolandlinda3
Carpal Tunnel
Reged: 01/24/06
Posts: 2233
Loc: Crozet VA 22932
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The link takes you to the results of an observation period on the first day of the new year. Conditions were iffy so I could not make out arms like the excellent sketch that O'Meara presents in his Messier book when I did the visual EP sketch. However, the same conditions do not prevent the video astro camera from presenting a nice scene for sketching on the monitor. The sketch page includes both sketches.
My wife and I enjoyed a delightful review of the object from the 4 inch refractor. While I sketched, she chose to rock in a rocking chair and just take in the view.
For comparison, the second link is a sketch from the 12.5 inch Dob with the same video astro camera. While more aperture does help present exquisite detail, the 4 inch refractor view was respectable.
The orientation differences are due to differences in the scopes and whether a diagonal is used.
M33 1/1/08 sketch: http://www.cloudynights.com/photopost/showphoto.php?photo=13033
M33 11/6&7/07 sketch: http://www.cloudynights.com/photopost/showphoto.php?photo=12462&password=&sort=7&thecat=500
Roland
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Roland
Sketches in members galleries: rolandlinda3
Inspirational stories/sketches at:
www.christworksministries.org
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novbabies
Postmaster
Reged: 06/05/05
Posts: 15678
Loc: Northern Georgia!
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Great illustration and amen!
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Good Seeing!
Mark
Orion 12" XTi f/4.9
VERY old Edmund 6" f/8 reflector
Assorted binoculars
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frank5817
Post Laureate
Reged: 06/13/06
Posts: 4093
Loc: Illinois
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Roland,
The comparisons of the M-33 sketches here are most interesting. The video camera makes up for a lot of aperture
and your sky is pretty dark to get the nice 4 inch view. Oh, and all these sketches are wonderful.  
Frank
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my gallery
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rolandlinda3
Carpal Tunnel
Reged: 01/24/06
Posts: 2233
Loc: Crozet VA 22932
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Thanks, Frank. Skies were average for here with probably less sky glow than you have. However, as long as I am confident I have the object in the center of the field, the astro-video camera can detect an object much easier than the eyes in a sky glow situation...because the camera is optimized to work with much smaller signal over noise ratios than my eyes. The average improvement in normal skies is about 2.5 times the aperture gain by using the astro-video. The gain in heavy sky glow pollution situations is a little more because the eyes are simply not designed to pick up the smaller difference of the object over the background. This is why the sketches in our gallery that were done in Texas (15 miles from Ft Worth and 25 miles from Dallas central) were much better than we could have ever seen with eyes alone. Sorry for the long explanation, but I have thought of you more than once in the Chicago area. This tool might be a real help if you even go that way. It makes sketching DSOs come alive in a new way. Roland
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Roland
Sketches in members galleries: rolandlinda3
Inspirational stories/sketches at:
www.christworksministries.org
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SAL
Carpal Tunnel
Reged: 09/13/03
Posts: 2093
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Wonderful sketches!
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Stellarvue 102BV (Feather Touch focuser)
Burgess 1278 (MoonLite CF2B focuser)
Hardin 10-inch Dob (GSO Crayford Focuser)
7x50 Binoculars
The heavens are telling of the glory of God; And their expanse is declaring the work of His hands. (Psalms 19:1 NASB)
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CarlosEH
Post Laureate
Reged: 01/19/05
Posts: 4142
Loc: Pembroke Pines, Broward County...
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Roland,
Great observations of M33 showing much detail. The astro-video camera brings out the faint detail of this galaxy nicely. Visually detail is not as easy to detect. Thank you for sharing them with us all.
Carlos
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rodelaet
Post Laureate
Reged: 04/28/06
Posts: 3063
Loc: 50°56' N - 4°58' E (Belgium)
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Roland, those sketches are delightfull!! The wider field of view offers a lot of new sketching opportunities for your wife and yourself!
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Rony
My Astronomical Sketches
My Binocular Sketches
Callibrate your Monitor with this little strip.
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kraterkid
Post Laureate
Reged: 03/07/05
Posts: 4551
Loc: Jacumba, California
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Utterly beautiful sketches Roland!
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Rich
My CN Gallery
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rolandlinda3
Carpal Tunnel
Reged: 01/24/06
Posts: 2233
Loc: Crozet VA 22932
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Thank you for the comments. It truly is a privilege to be able to do study and sketch with the tool set we have. Roland
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Roland
Sketches in members galleries: rolandlinda3
Inspirational stories/sketches at:
www.christworksministries.org
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