M27-Dumbbell Nebula on 10/28/09

The star 14Vul

NGC 6853 / Dumbbell nebula / M 27

M27-Dumbbell Nebula on 10/28/09 by FlintstoneStargazer.

Camera: Nikon D50
Exposure: 1hr 9m (23 frames) ISO 800 RGB
Filter: Orion Skyglow Imaging Filter
Focus Method: Prime focus
Telescope Aperature/Focal Length: 203×812mm
Mount: LXD75
Telescope: Meade 8" Schmidt-Newtonian
Guided: Yes - PHD Guiding
Stacked: DeepSkyStacker
Adjustments: cropped/leveled in Photoshop
Location: Flintstone, GA

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Comments

kemyers91384 says:

Very nice. Good accurate color with a little guiding error or flexure and some coma in the outer edges of the frame. Try to add more exposure to the stack.
Posted 2 months ago. ( permalink )

FlintstoneStargazer says:

Thanks. The guiding was working pretty well and I've actually got less coma after adjusting my mirror (I moved it a bit forward). I'm not sure I'll be able to get rid of that much more without a coma corrector of some kind. I've been doing a lot of experiments with guiding and in doing them found that using a diagonal on my guide scope was a bad idea. Once I removed that, it stopped chasing. It stil isn't perfect, but it's way better than it used to be.
Posted 2 months ago. ( permalink )

kemyers91384 says:

It is always best to use the shortest, lightest and stiffest connection with a guide camera on a guidescope to eliminate or reduce differential flexure which often is confused with guiding errors.
Posted 2 months ago. ( permalink )

FlintstoneStargazer says:

I'm still experimenting a lot with my setup, trying to find the optimum combination of things. Because of my yard, I can't build an observatory, which would be my preference, but I've built a levelled platform that plugs into holes I made in my driveway and allows me to be nearly perfectly aligned right away each night. It's worked really well and saved me probably 20-30 minutes a night. My guidescope is an ongoing experiment. Figuring out that I should remove the diagonal made a HUGE difference. Now I've just got 20 other things to figure out... :)
Posted 2 months ago. ( permalink )

astrometry.net says:

Hello, this is the blind astrometry solver. Your results are:
(RA, Dec) center:(300.060054002, 22.6358064986) degrees
(RA, Dec) center (H:M:S, D:M:S):(20:00:14.413, +22:38:8.903)
Orientation:-100.58 deg E of N

Pixel scale:1.98 arcsec/pixel

Parity:Reverse ("Left-handed")
Field size :1.66 x 1.10 degrees

Your field contains:
The star 14Vul
NGC 6853 / Dumbbell nebula / M 27

View in World Wide Telescope

-----
If you would like to have other images solved, please submit them to the astrometry group.
Posted 6 weeks ago. ( permalink )

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Taken on October 28, 2009
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M27-Dumbbell Nebula on 10/28/09

Comments

kemyers91384 says:

FlintstoneStargazer says:

kemyers91384 says:

FlintstoneStargazer says:

astrometry.net says:

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