Dave B #17555
Forum Enthusiast
- Messages
- 310
- Reaction score
- 0
Looking through a telescope lens with a green filer to control the brightness. This is still work in progress. I'm looking for the correct setting.
-
Welcome to the new forums! Please read this first. For known issues we are working to resolve, click here.
Moon Shot
- Thread starter Dave B #17555
- Start date
B
Bill Klein
Guest
VERY cool. Can you share what settings you used for the camera? Also, have you tried any other astrophotos?
Thanks for the cool pic!
Dave B #17555
Forum Enthusiast
- Messages
- 310
- Reaction score
- 0
The shot was taken with the camera in P Mode (Normal). f2 at 1/60 was selected by the camera. I also used the half shutter to handle the focus. The hard part was holding the camera up to the telescope eyepiece. A threaded lens adapter would have produced that perfect picture but the REAL CHALLENGE WAS to take the photo WITHOUT external lens.
This was my first out of this world photo, now for the rings of Saturn?
This was my first out of this world photo, now for the rings of Saturn?
B
Bill Klein
Guest
Hi Dave,
I'm actually more interested personally in doing timed exposures of stars, etc... I had thought this wouldn't be possible with a normal digital camera due to noise accumulation, but with the recent posts Phil has made regarding reducing noise by cooling the camera, I'm looking forward to trying!
I'll bet! I don't have a telescope at the moment, so I don't have that problem right now.
I'm actually more interested personally in doing timed exposures of stars, etc... I had thought this wouldn't be possible with a normal digital camera due to noise accumulation, but with the recent posts Phil has made regarding reducing noise by cooling the camera, I'm looking forward to trying!Can't wait, please post when you do it!
The exposure rule for moon shots with a film camera is f/8 or f/11 with shutter set to 1/film speed. ie, with 100asa film, I would bracket both f/8 and f/11 with a 1/60 shutter.
What the equivalent ASA number for the 3000EX?
If we force the appropriate moon rule on the 3000EX, it sounds like we can skip the green filter. Can some one try it out and let us know the results? I'd try it myself, but it's been depressingly overcast for the past week......
Amy
What the equivalent ASA number for the 3000EX?
If we force the appropriate moon rule on the 3000EX, it sounds like we can skip the green filter. Can some one try it out and let us know the results? I'd try it myself, but it's been depressingly overcast for the past week......
Amy
Great shot for a hand held afocal to your telescope. I know how hard it is to keep the lens lined up on the eyepiece. I went through the same process and looked at Home Depot for a solution.
Can you describe your telescope? I have an old Tasco 4 1/2in reflector with the smaller .965 lens (a mistake I made years ago). I should have gotten a 1.25 eyepiece telescope.
1 1/2" (fits QV-3000EX) to 1 1/4" (fits over eyepiece) drain adapter. Had to carve out the 1 1/4" section to extend the camera lens right to the telescopy eyepiece.
Can you describe your telescope? I have an old Tasco 4 1/2in reflector with the smaller .965 lens (a mistake I made years ago). I should have gotten a 1.25 eyepiece telescope.
1 1/2" (fits QV-3000EX) to 1 1/4" (fits over eyepiece) drain adapter. Had to carve out the 1 1/4" section to extend the camera lens right to the telescopy eyepiece.
Looking through a telescope lens with a green filer to control the
brightness. This is still work in progress. I'm looking for the
correct setting.
crowning41680
Well-known member
- Messages
- 110
- Reaction score
- 0
Hi Amy,
besides the fact that this rule differs with the diameter of the telescope, your rule of thumb works with the QV-3000. I've done some moon shoots in the exposure range 1/100sec - 1/200sec @ f4 f5.6 f8. ASA number for the QV-3000 is about 100. But as allways you have to play a little bit arround with the settings.
tc
besides the fact that this rule differs with the diameter of the telescope, your rule of thumb works with the QV-3000. I've done some moon shoots in the exposure range 1/100sec - 1/200sec @ f4 f5.6 f8. ASA number for the QV-3000 is about 100. But as allways you have to play a little bit arround with the settings.
tc
V
Victor Bos
Guest
Bill Klein wrote:
-- snip --
Unfortunately lots of noise is present, of course the longer the exposure, the more noise. I shot amongst others a series of the Pleijades (crops from original, filename=exposure time):
At that moment, the sky was quite heavily light-polluted (as allways in the Netherlands), and the camera was cooled down to the outside temp of about -10celsius.
Also the blue edges around the stars, especially around Aldebaran is quite annoying....
ciao,
Victor
http://members.tripodnet.nl/fotopijnenburg
-- snip --
I did some experiments with this a few months ago.I'll bet! I don't have a telescope at the moment, so I don't have
that problem right now.
in doing timed exposures of stars, etc... I had thought this
wouldn't be possible with a normal digital camera due to noise
accumulation, but with the recent posts Phil has made regarding
reducing noise by cooling the camera, I'm looking forward to trying!
-- snip --
Unfortunately lots of noise is present, of course the longer the exposure, the more noise. I shot amongst others a series of the Pleijades (crops from original, filename=exposure time):
At that moment, the sky was quite heavily light-polluted (as allways in the Netherlands), and the camera was cooled down to the outside temp of about -10celsius.
Also the blue edges around the stars, especially around Aldebaran is quite annoying....
ciao,
Victor
http://members.tripodnet.nl/fotopijnenburg
Keyboard shortcuts
- f
- Forum