Atik Cameras Forum

Images => Deep Sky Images => Topic started by: Guy Walsh on December 16, 2012, 11:49:34 pm

Title: M1 Crab nebula - 428 EX OSC
Post by: Guy Walsh on December 16, 2012, 11:49:34 pm
Taken the other night, average city sky..freezing mist..

Still managed 2 hours on the crab ( 16 x 450 seconds ) master bias, no flats or darks.

Thanks for looking...

(http://www.pbase.com/walshy/image/147818365/original.png)

(http://i1084.photobucket.com/albums/j402/Guy_Walsh/M1-Crab-Nebula-ATIK-428-OSC.png)
Title: Re: M1 Crab nebula - 428 EX OSC
Post by: bwa on December 17, 2012, 07:23:40 am
A nice image!  I do believe there is a bit more nebulosity hidden in the darkness but I wouldn't complain too much with the conditions you mention...

What scope did you use?

bwa
Title: Re: M1 Crab nebula - 428 EX OSC
Post by: Guy Walsh on December 17, 2012, 12:33:43 pm
A nice image!  I do believe there is a bit more nebulosity hidden in the darkness but I wouldn't complain too much with the conditions you mention...

What scope did you use?

bwa

Hi, APM 107 f/6.5 with a tele vue 0.8x reducer, the sky was grotty ;)
Title: Re: M1 Crab nebula - 428 EX OSC
Post by: bwa on December 17, 2012, 05:41:06 pm
I did have to look up

grotty [ˈgrɒtɪ]
adj -tier, -tiest Brit slang
1. unpleasant, nasty, or unattractive
2. of poor quality or in bad condition; unsatisfactory or useless

Yupp, I've had skies like that... :)
Title: Re: M1 Crab nebula - 428 EX OSC
Post by: Guy Walsh on December 17, 2012, 08:57:39 pm
I did have to look up

grotty [ˈgrɒtɪ]
adj -tier, -tiest Brit slang
1. unpleasant, nasty, or unattractive
2. of poor quality or in bad condition; unsatisfactory or useless

Yupp, I've had skies like that... :)

Lol...  ;D
Title: Re: M1 Crab nebula - 428 EX OSC
Post by: Lex on January 18, 2013, 08:03:08 pm
Hi Guy,

I think that there is more data behind your nice Crab than it actually shows...
Perhaps go easyier with the stretching, doing this would clip less data and show more reflections...