Hi all, just a start to the season. There are several problems with this shot. First is that my alignment needs re-examining, some dec movement there and the second is that there are coma spikes on the stars. Need to recheck collimation again.
7 x 4:20 seconds
Stacked in Registax3
Processed and layer masked in Photoshop
D70
iso 800
Post notes, more attention to detail needed here. Still not too bad and this is a difficult target in light polluted skies.
Hi Paul,
What f/ratio did you use? Looks like you've got a focal reducer in there!
Nice shot though. I've been waiting to see some D70 shots.. Gary Beal is also a Nikon nut with a D100.
Cheers
Paul,
well done, and a good start to the season.
You have mentioned all the obvious ones, and yes there is room for improvement, but nevertheless a good shot.
There almost looks like a little vignetting, with the outer areas being quite dark. We (Rob and I) sometimes get this if we stretch the image too much. Nice colour though, and that D70 seems to really be giving good results. Be good to see the Mk2 version.
Gary
Robby the f ratio is 6.3 and yes I a focal reducer on the scope when doing dso's
Gary and Mike, yeah got lots of Vignetting and tried to reduce it by doing a layer adjustment to it. The colour is fair natural though as this is high red emission nebula.
Seeker the D70 is less sensitive to Ha light than the canon.
Will try soon for some more interesting shots and perhaps a little look again at the lagoon. Want to get something better than this. Just that perfectionist in me.
Just a question. Could you do a nice photo of Orion Neb. The poor old thing seems to get left out a lot and I would like to see some good amateur shots of it.
The Astro Pics on this thread/site are just mind blowing - there is real talent here when it comes to imaging the things of the Universe !!!!!!!!!!!!! The best I've seen!!!!!!!!!!!! Well done !!!!!!!!
Cheers,
Jo-Anne
This is Adam here *exfso's mate in Brissy* - I too have a D70 but no telescopes yet, but got this moon shot on a 28-200 mm nikon lens....
Question for ya - when you took these shots were you using the 'hack' that stops the D70 taking an overlay/black shot of equal length for each bulb shot (to reduce noise)? I understand this second equal lentgth 'balancing' shot drops the quality of astronomy pics and that it can be overridden by switching off the camera as soon as the first timed exposure has gone off...eg
a 30 second exposure takes in total 60 seconds - 30 for exposure, 30 for offset shot (the offset shot you avoid by turning off).
I don't currently use the hack, although I can say that the NR selection can be simply turned off in the menu. I really like the images that are produced using the NR option, and it does save dark frame subtraction. It might be something to consider in the future as I develop my skills in this area. I will check out the link that you posted and see if anything is there for me. Thanks for the input.
