an unguided and unprocessed shot of eta carinia NGC3372 of 1 second, 5 seconds 10 seconds 15 sec 20 sec 25 sec, 30sec, 40sec, 60 sec and 90sec at iso 400 with the canon 450d.and the celestron RASA 11
OMG this is so awesome and i am finding focus is critical i havent taken darks, flats or bias's yet
Absolutely agree but how much fun at a dark sky sites
Hmmm. That didn't come out how I meant it. I was light-heartedly suggesting it was so fast that the light pollution doesn't matter. Which is true to a degree... a fast scope gives you an advantage because you need more signal to minimise the effects of light pollution.
Hmmm. That didn't come out how I meant it. I was light-heartedly suggesting it was so fast that the light pollution doesn't matter. Which is true to a degree... a fast scope gives you an advantage because you need more signal to minimise the effects of light pollution.
well it's been a while since I have done any deep sky stuff and this should give me some practice. Need to relearn PI. Also need to learn how to do flats with it, and suggestions
well it's been a while since I have done any deep sky stuff and this should give me some practice. Need to relearn PI. Also need to learn how to do flats with it, and suggestions
I'm sure that your PI chops will return quickly Will be interesting to see if flats are tricky. At least you won't have to worry about dust too much - it will be well out of focus.
Very promising first light images! The right camera will make a big difference. No disrespect to the venerable 450D ( and i still have my cooled version), something like an ASI1600MC-C would really take advantage of that scope. Fitting within the central obstruction it will maximise light grab, increase contrast, and with its ultra low noise you can take very short subs to escape sky glow saturation. It would excel at fast narrowband, if you go for a cooled mono camera (like the ASI1600MM-C), but a filter drawer system (try Teleskop-Services) would be needed to avoid a filter wheel blocking signal. Add a set of high speed narrowband filters and you have it all. An exciting project for sure.
I had a look at pricing for RASA/Fastar/Hyperstar... prohibitive.
On the other hand, Freestar alternative, being much cheeper, is not a real alternative.
Does someone know about anything it the middle of those two?
@ h0ughy - more clouds huh?
Oh wait, it's Eta.
Beautiful mate, congrats on first light.
Gee, that didn't take you long to take out of the box and start imaging.
You're exactly like me {/not}.
@ h0ughy - more clouds huh?
Oh wait, it's Eta.
Beautiful mate, congrats on first light.
Gee, that didn't take you long to take out of the box and start imaging.
You're exactly like me {/not}.
I wait with baited breath for the unboxing of the doorstop
Very promising first light images! The right camera will make a big difference. No disrespect to the venerable 450D ( and i still have my cooled version), something like an ASI1600MC-C would really take advantage of that scope. Fitting within the central obstruction it will maximise light grab, increase contrast, and with its ultra low noise you can take very short subs to escape sky glow saturation. It would excel at fast narrowband, if you go for a cooled mono camera (like the ASI1600MM-C), but a filter drawer system (try Teleskop-Services) would be needed to avoid a filter wheel blocking signal. Add a set of high speed narrowband filters and you have it all. An exciting project for sure.
You might be onto something there Glen. May look into that option. BTW I undeleted your post. It was constructive
Thanks for that information. So how do you do flats
You could do it in the classical way or more easily with either one of these.....
1. Use Adobe Camera Raw or
2. on some Nikon cameras there is a vignette control. Perhaps also on Canon.
Here is the function in Adobe Camera Raw (start at 44 seconds in for an intro and then skip to 12:40 ish for Processing in Adobe, GRRRRrrrr software wont go there automatically despite instruction to do so..... Oh well maybe watch the lot it's entertaining and interesting)