Return to the Cloudy Nights Telescope Reviews home page

Click here if you are having trouble logging into the forums

Cloudy Nights - Official Forums of the 2009 International Year of Astronomy
Privacy Policy | Please read our Terms of Service | Signup and Troubleshooting FAQ | Problems? PM a Red or a Green Gu.... uh, User
  You are not logged in. [Login] Entrance · Main Index · Search · New user · Who's Online
FAQ · Calendar

Astrophotography and Sketching >> DSLR & Digital Camera Astro Imaging & Processing
Previous thread Previous   Index   Next thread Next   Threaded Mode Threaded  

Pages: 1
Darren1968
scholastic sledgehammer
*****

Reged: 02/04/05
Posts: 766
Loc: Ontario, Canada
Cacoon Nebula Widefield
      #2624216 - 09/04/08 06:57 PM Attachment (36 downloads)
Edit post Edit   Reply to this post Reply   Reply to this post Quote Quick Reply: Quick Reply  

Got out for a second night last weekend.

Managed to get clear skies, above average transparency and seeing conditions.

There are so many stars in this image that when I resized it to fit within forum guideleines, I had to bring my .jpg compression quality all the way down to 20%. The image quality is therefore not the best in this post.

The Cocoon Nebula overlaps the dark nebula Barnard 168 in this widefield. The cocoon itself is only 12' in apparent size and has a low surface brightness which makes it difficult to get alot of detail with my 80mm scope.

Details:
Date: September 1, 2008
Scope: Skywatcher ED80 f/7.5, guided
Camera: Canon 300D moddified
Image: 22 x 4min subs, ISO800, darks, no flats
Processing: Stacked in DSS, processed in PS CS

My canon definitely needs a sensor cleaning. I had a heck of a time processing with no flats and all of the dust donuts.

Thanks for looking.

--------------------
GSO 8" f/4 Newt.
Skywatcher 80ED Pro
Meade ETX-125 5"Mak
Mount: EQ6 Pro
Canon 300D
homepage: http://home.cogeco.ca/~dpursel
ToUcam Pro II

Post Extras: Print Post   Remind Me!   Notify Moderator  
Mr_T
sage


Reged: 04/06/08
Posts: 356
Loc: NJ
Re: Cacoon Nebula Widefield new [Re: Darren1968]
      #2624473 - 09/04/08 09:19 PM
Edit post Edit   Reply to this post Reply   Reply to this post Quote Quick Reply: Quick Reply  

Very nice would benefit from more subs and flats

Les

--------------------
Celestron CPC 800
Celestron 11" OTA
Stellarvue 102ED
Celestron 80mm short tube
Losmandy G11
Canon 40D Modified
Meade DSI Pro II

Post Extras: Print Post   Remind Me!   Notify Moderator  
s58y
Post Laureate


Reged: 12/12/04
Posts: 4861
Loc: Eastern NY
Re: Cacoon Nebula Widefield new [Re: Mr_T]
      #2626562 - 09/05/08 11:45 PM
Edit post Edit   Reply to this post Reply   Reply to this post Quote Quick Reply: Quick Reply  

Nice shot -- you sure do have a lot of stars in the background field.

--------------------
Hutech 30D, SBIG ST-402 autoguider
SV80S, SV66 guidescope
AP900, G-11, Barndoor tracker

http://www.pbase.com/s58y

Post Extras: Print Post   Remind Me!   Notify Moderator  
Darren1968
scholastic sledgehammer
*****

Reged: 02/04/05
Posts: 766
Loc: Ontario, Canada
Re: Cacoon Nebula Widefield new [Re: s58y]
      #2626878 - 09/06/08 06:15 AM
Edit post Edit   Reply to this post Reply   Reply to this post Quote Quick Reply: Quick Reply  

Thanks for the comments guys.

Mr T, I agree about the flats. I wish that I would have taken them the next morning. My equipment was still setup, I just forgot.

The tiff looks a lot better IMHO than this overcompressed jpg but the image definitely also needs some more exposure time.

Darren

--------------------
GSO 8" f/4 Newt.
Skywatcher 80ED Pro
Meade ETX-125 5"Mak
Mount: EQ6 Pro
Canon 300D
homepage: http://home.cogeco.ca/~dpursel
ToUcam Pro II

Post Extras: Print Post   Remind Me!   Notify Moderator  
Mr_T
sage


Reged: 04/06/08
Posts: 356
Loc: NJ
Re: Cacoon Nebula Widefield new [Re: Darren1968]
      #2627029 - 09/06/08 09:32 AM
Edit post Edit   Reply to this post Reply   Reply to this post Quote Quick Reply: Quick Reply  

Hi Darren,you could make your self a light box they are very handy for flats

regards Les

--------------------
Celestron CPC 800
Celestron 11" OTA
Stellarvue 102ED
Celestron 80mm short tube
Losmandy G11
Canon 40D Modified
Meade DSI Pro II

Post Extras: Print Post   Remind Me!   Notify Moderator  
ChazK
Pooh-Bah


Reged: 11/23/05
Posts: 1453
Loc: Melbourne, Florida
Re: Cacoon Nebula Widefield new [Re: Mr_T]
      #2627675 - 09/06/08 04:02 PM
Edit post Edit   Reply to this post Reply   Reply to this post Quote Quick Reply: Quick Reply  

Excellent image. Nice color.

--------------------
Tak TOA 130mm/NJP Temma2
Tak FS 60CB
Canon 40D (unmodded)
Astronomik CLS
Canon EF 28-135mm f/3.5-5.6

www.digitalunatic.com


Post Extras: Print Post   Remind Me!   Notify Moderator  
Darren1968
scholastic sledgehammer
*****

Reged: 02/04/05
Posts: 766
Loc: Ontario, Canada
Re: Cacoon Nebula Widefield new [Re: Mr_T]
      #2627719 - 09/06/08 04:30 PM
Edit post Edit   Reply to this post Reply   Reply to this post Quote Quick Reply: Quick Reply  

Quote:

Hi Darren,you could make your self a light box they are very handy for flats

regards Les



Thanks Mr T.

I have seen plans for building light boxes but have never undertaken the task.

I image from a backyard observatory and it would be easy for me just to leave my camera attached until the next morning and then take the flats. I just have gotten into the mode of being lazy about flats.

Darren

--------------------
GSO 8" f/4 Newt.
Skywatcher 80ED Pro
Meade ETX-125 5"Mak
Mount: EQ6 Pro
Canon 300D
homepage: http://home.cogeco.ca/~dpursel
ToUcam Pro II

Post Extras: Print Post   Remind Me!   Notify Moderator  
soreneck
professor emeritus
*****

Reged: 04/01/06
Posts: 696
Loc: Toronto, Canada
Re: Cacoon Nebula Widefield new [Re: Darren1968]
      #2627976 - 09/06/08 07:33 PM
Edit post Edit   Reply to this post Reply   Reply to this post Quote Quick Reply: Quick Reply  

Great shot!

--------------------
WO 110 FLT
WO 66 Triplet
Celestron C11
SkyWatcher EQ-6 Pro
Stiletto focuser for Canon DSLRs for sale
One small but fearless dog (observing companion)
my astrophotos on flickr

Post Extras: Print Post   Remind Me!   Notify Moderator  
Pages: 1

Previous thread Previous   Index   Next thread Next   Threaded Mode Threaded  

Extra information
11 registered and 31 anonymous users are browsing this forum.

Moderator:  Charlie Hein, knuklhdastnmr 

Print Thread

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled


Thread views: 236

Jump to

Home



Cloudy Nights Sponsor: Astronomics