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Charlie Hein
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Reged: 11/02/03
Posts: 6579
Loc: 26.06.08N, +80.23.08W
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bookworm14 asks:
Quote:
What should I look for in DSLR camera specifications for the following conditions:
1. The camera should be usable for astrophotography. But my interest is in asteroids. Can the same camera do both?
2. Some people "modify" their cameras, apparently by removing the IR filter. Can I buy a camera in which that need not be done?
3. After a night of astrophotography, I'd like to be able to use the camera for home photography etc. Can that be done?
I have an Orion Skywatcher 120mm f/8.3. Is there a best camera for that scope? What about a low budget? Best camera for that?
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Weston CSC:
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s58y
Post Laureate
Reged: 12/12/04
Posts: 4861
Loc: Eastern NY
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The answer to #3 is yes, especially if the DSLR is unmodified. Of course, you'd normally want camera lenses rather than telescopes for daytime use.
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Hutech 30D, SBIG ST-402 autoguider
SV80S, SV66 guidescope
AP900, G-11, Barndoor tracker
http://www.pbase.com/s58y
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jgraham
Postmaster
Reged: 12/02/04
Posts: 5370
Loc: Dayton, Ohio
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1. The camera should be usable for astrophotography. But my interest is in asteroids. Can the same camera do both?
Sure, the only possible issue with asteroid photography is some like to show the motion of the asteroid over and hour or so as a small streak, the field of view of a DSLR is often so wide you’ll need to crop away a lot of the image to show this. So in reality you get the best of both worlds; a nice wide field context image and enough pixels to zoom in on the field around the asteroid to show its motion.
2. Some people "modify" their cameras, apparently by removing the IR filter. Can I buy a camera in which that need not be done?
The modification is not required for successful anthropography but it is useful if you want exceptionally high red response (useful for H-alpha emission nebula). The modification can always be done later if it turns out you’d like to have it.
3. After a night of astrophotography, I'd like to be able to use the camera for home photography etc. Can that be done?
Absolutely, I use the same DSLRs for astrophotography that I use for family and nature photography.
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-John
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Homebuilt scopes from 4.25-16.5"
Meade LXD75-N6/SN6/SC8, DSX-90, ETX-60BB, ETX-125PE, DS-2130
Orion StarBlast, BinoViewers, Coronado PST
Rebel XT/XTi, DSI Pro (I & II), DSI, LPI, Electronic Eyepiece, Phillips SPC900NC
Tasco 60mm Refractors
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NeoDinian
Experienced Postmaster
Reged: 10/05/05
Posts: 12070
Loc: Rockford Illinois
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Quote:
The modification is not required for successful anthropography...
Anthropography is HARD... 
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Neo... (Jeff)
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10" LX200-GPS/SMT UHTC "Draco"
 Rockford, Il.
NeoDinian's Eye on the Sky!
Coming soon:
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Stephen S
super member
Reged: 08/21/07
Posts: 132
Loc: San Diego, CA
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Anthropography "the branch of anthropology that deals with the geographical distribution of specific human cultures" is indeed quite hard.  However, given my limited experience with astrophotography, I'm not sure which is harder. 
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C9 1/4-SGT (XLT)
AT80ED
Vixen Porta Mount
50mm Takahashi LE
24mm Meade UWA
13mm Televue Ethos
7mm Pentax XW
3mm Smart Astronomy
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