Quote:
Originally Posted by Jeff
I love this simple cluster through binocs, or at low mag through a scope to avoid the wobbles. I stumbled across the Pleiades the first time I peeked through a scope in late 2007 (a modest little Meade ETX-60, FL=350mm), and remember gazing for ages. Even at 23x using a cheap super plossl, seeing the large bluish stars first hand made quite at the time.
 
Quick capture on Jan 17th with 450D / ED80.
20x30sec stack @ ISO800 with single dark.
Stacked in DSS and tweaked in PS cs3.
Thanks for looking.
Jeff |
Hi Jeff,
Well done.
I think you need a lot more data, the blue from the surrounding reflection neb is only just starting to come through. Like you, I am just exploring the possibilities of the 450D. A very good book I have on DSLR imaging talks about the "Times five Rule". What ever exposure you use for your subs, you should take enough darks, at the same exposure to add up to 5 times the exposure of the individual subs.
In this instance you used 30 sec subs so you need 5 x 30 sec darks, at least thats what the book suggests.
There appears to be some round dark artifacts that would be dust etc in the optical system, my research suggests taking 16 flats and Humayan gave me an excellent tip, to take the flats at ISO 100 and not at ISO 800 or whatever your lights were taken at.
This image really shows the possibilities for what you could achieve with this object.
Regards
Trevor
