M1 - Crab Nebula with C9.25 and DSLR

[Dave Smith]

After resolving all my troubles with bands on my images I was delighted to get a third clear night in a row and tried guided imaging for the first time with my Celestron 9.25" SCT using an ST80 as guide scope. This image is the result of 2h30m in 5 minute subs plus darks and flats. The scope was used at f10 (i.e. no focal reducer) and collected with that super program APT. With mirror-lock turned off there were no longer any issues.

I am overjoyed with the result as I originally considered this to be too faint and small for a DSLR. The DSLR is by the way a Canon 40D modded by astronomiser.

Thanks for looking. Any advice greatfully received.

Dave

[red dwalf]

wow, thats very good, i thought and was told that it was very difficult imaging with a focal length of 2500mm but you seem to of nailed it,

well done sir

[jgs001]

That's great Dave, really glad you got the band problem resolved and it was an easy fix too. What ISO were you running at ?

[Dave Smith]

Sorry I should have said. ISO 800 Stacked in DSS and processed in Photoshop CS2.

Dave

[peter shah]

super structure dave....

[Dave Smith]

Thanks Peter. I should also have mentioned that I made use of your star reduction action.

Dave

[Merlin66]

Well done!

Just goes to show what can be achieved with a good scope and a DSLR.

Congratulations.

[Psychobilly]

Nice work Dave

Just goes to Show Long FL DSLR imaging with a slower scope isn't impossible just need a bit of care and attention

Peter....

[Glasspusher]

Very nice image Dave, I can understanding why you are please with that... I use a similar setup myself.

John

[TakMan]

That's a really nice rendition Dave,

...must feel good to nail this after all those troubles you encountered with your Rosette image!

Roll on the next clear night then!

Regards and clear skies....

Damian

[Dave Smith]

Many thanks Ken, Peter, John and Damien.

Dave