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Photo Forum / Digital Photography / DSLR Cameras / December 2005Moon photo with D70
A poster sent me mail asking how I took this shot and made it not blurry: http://trupin.smugmug.com/gallery/956734 I took the photo at ISO 800, 1/80. I was finding that it took several seconds for the shutter vibration to die down because the D70 has no mirror lock-up. (The Meade ETX125 is about 1900mm, f/15.) Instead of taking longer exposures that showed motion blur, I tried to get one that would be almost fast enough to minimize vibration. I set the camera to do continuous shooting, hoping that I could remove any button press shake with the second or third image. Unlike with long-exposures of stars, night scenes, etc., I couldn't wait a few seconds for the shake to stop and then remove a card from the front of the telescope. At ISO 800, I got quite a bit of noise, so I ran the image through Neat Image to clean it up. Other people have mentioned stacking 10 or 20 of the same shot to come up with something crisper. Or, I could just get a camera with MLU. > A poster sent me mail asking how I took this shot and made it not > blurry: http://trupin.smugmug.com/gallery/956734 [quoted text clipped - 8 lines] > stars, night scenes, etc., I couldn't wait a few seconds for the shake > to stop and then remove a card from the front of the telescope. I don't have the exposure details with me at the moment but this was probably 1/250 at ISO 400: http://www.photo.net/photodb/photo?photo_id=3803100&size=lg My first, considerably blurier, attempt on a shaky Celestron CG-4 mount and 750mm focal length reflector, f/5. I can't remember if I had mirror lockup enabled or not. Not much noise, though, I did no noise processing. Greg  Signature"Destroy your safe and happy lives before it is too late The battles we fought were long and hard Just not to be consumed by rock and roll" - The Mekons >> A poster sent me mail asking how I took this shot and made it not blurry: >> http://trupin.smugmug.com/gallery/956734 [quoted text clipped - 19 lines] > > Greg Here is one from my Pentax Ds and Sigma 70-300mm lens. http://www.shuttertalk.com/forums/viewtopic.php?pid=33276#33276 Anyone notice that it's upside down? (look at his location...LOL). I'm impressed. I can't get anywhere near as good a shot around here (Toronto), what with all the light pollution. SignatureReply via the web portal at www.faczen.com or email usenet at firstaidco dot ca "Pete D" <no@email.com> wrote server.bigpond.net.au... > > Here is one from my Pentax Ds and Sigma 70-300mm lens. > > http://www.shuttertalk.com/forums/viewtopic.php?pid=33276#33276 LOL, must have twisted heading over on the big fat Pan Pacific fibre (note correct spelling). > Anyone notice that it's upside down? > (look at his location...LOL). [quoted text clipped - 5 lines] >> >> http://www.shuttertalk.com/forums/viewtopic.php?pid=33276#33276 Light pollution has no effect on shots of the Moon or planets. They are bright enough so they aren't drowned out like "deep sky" objects. What does degrade images of planets and the Moon are things like heat being released at night from buildings and paved roads. Also, an unsteady atmosphere (causes stars to twinkle) further degrade images. That's why solar system objects show the most detail (the images are most steady) if you can avoid these sources of degradation. Places like Florida offer very good "seeing conditions" and they allow people to take excellent images. In Toronto seeing is generally moderate to poor, with good nights occuring mostly on damp summer nights when the atmosphere is steady. >Other people have mentioned stacking 10 or 20 of the same shot to come up >with something crisper. Hi, do a search for 'Registax'. It's a freebie bit of astro software that allows you to stack images together. It will align and stack them automatically, and you can even have it choose the best quality images to use ! Tim |
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