View Full Version here: : Helix Nebula - NGC7293
cventer
21-10-2005, 01:10 AM
Hello All,
After spending 6 hours tonight (yes the wife is away) trying to process this Helix data gathered on the full moon Monday night I am giving up.... I need to re image this under dark skies and take longer exposures. Anyhow its the first time I have imaged this object and considering conditions and what I started with 6 hours ago and after much digital trickery I am not too unhappy with the results...Details of image aquisition are on this link....
http://www.dslrfocus.com/gallery/NGC7293.html
I had to make it smallish to hide the noise from lack of signal... :(
Best Regards
Chris Venter
atalas
21-10-2005, 03:22 AM
Holy Cow Chris ! you pulled this out of a Mull Moon ? It looks great .
xrekcor
21-10-2005, 05:15 AM
Well done Chris :thumbsup: :thumbsup: :thumbsup:
You can almost pick out the comet like structures you see in Hubble images.
regards,CS
Robby
21-10-2005, 06:35 AM
Nice one Chris.. I assume you are using the C9.25 for this? What do you use to get the diffraction spikes? I have used a couple of pieces of wire across the front in the past, but wondered if there was a better way?
Cheers
iceman
21-10-2005, 06:49 AM
Beautiful shot Chris, I can't wait to see the final version when you've got more signal to smooth it out.
davidpretorius
21-10-2005, 07:14 AM
great work!!!
h0ughy
21-10-2005, 07:35 AM
that's Tops! Again if that is your reject I look at it anyday
Wow Chris,
As always you leave me speachless.
:jawdrop:
TidaLpHasE
21-10-2005, 09:41 AM
;)Wow 6 hours, that's dedication.
That's an awsome image Chris, like all the ones you post.
cventer
21-10-2005, 09:46 AM
Thanks all for your nice comments.
Robby,
This was taken with a 4" Takahashi FS102. I made up a set of cross hair type vanes out of aluminum and painted them flat black with felt on the ends. They just slide into the dew shield.
If I wanted the same effect on my 9.25 I would use a set of very thin black shoe laces and blue tak them across the front.
The detail in this structure is hard to bring out with only 4" of glass. I will do this again on my C925 in a couple of weeks when I am at Vic South and hopefully get some of the nodules that are in the inner ring....
Processign from a dark site will be a lot easier. A full moon and wide field with the Tak makes Light pollution gradients a nightmare....from the burbs
Best Regards
Chris
Striker
21-10-2005, 11:24 AM
Very nice Chris.
6 hours...your very persistent....well done.
seeker372011
21-10-2005, 09:58 PM
Its what john west rejects....
seriously though Chris that is a keeper!
what a stunning image!
Rodstar
22-10-2005, 08:21 AM
Well done Chris. You can see quite clearly the steams of materialaround the inner edges, like in the shot in Australian Sky and Telescope Nov edition!
tornado33
23-10-2005, 08:20 AM
Do try that again without the moon, you already have the Northeast Arc (faint feature on right). I consider that the holy grail of amateur imaging, only deep shots can record that. I think you will get even better results without moonlight :)
Features of the Helix Nebula http://exploration.vanderbilt.edu/images/news/article_main/news_helix_nebula2.jpg
Scott
rumples riot
23-10-2005, 11:55 AM
Lovely image Chris, good definition in the ring and the central star is nice and bright.
Striker
23-10-2005, 12:03 PM
I cant even see this Neb in Brisbane Chris....I tried last night and took me neally an hour just to find it whilst doing 20 second exposure trying to find a glimpse of the Nebula....even with a few images at 40 seconds the detail was virtualy nill.
Once I found it the clouds come over......lol
Great effort for a suburban shot.
I might work on this tonight...weather pending
Itchy
23-10-2005, 05:49 PM
Yep, the Helix is pretty dim. Difficult to pick up visually from a suburban sight. Thank God for goto.
Good luck
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