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Thursday, June 29, 2006

Astrophotography with Fuji F30 and Orion Starblast Telescope

I was surprised to find out I could actually see Jupiter and the Galilean moons through my 4" reflector. I hooked up the F30 and shot some photos (very challenging to get good focus on stars and planets with my relatively cheezy setup). It's the same setup as in this post.

Here is a 100% crop from a shot of Jupiter that shows the bands. I did some Photoshopping to enhance the bands, but they are definitely visible. The lens specs are 114mm diameter (4.5 inches), 450mm focal length, F/4. You get roughly 30x magnification plus 3x more with the camera so that's roughly equivalent to a 3000mm, F/4 lens.


Here's another terrible shot that's got much stronger exposure so you can see three of the moons (I don't know what happened to the fourth one--I saw it last night.) Part of the problem here is shaking in the Telescope--it vibrates for a while after I let go--I only used the 2 second timer on the camera--next time I'll use the 10 second timer.

2 comments:

Anonymous said...

I don't know if you are still evaluating the F30, but I find there is a problem when using MACRO and the flash together; you basically get an obvious shadow down the bottom right hand corner of the photo - the shadow gets bigger the closer you get to the subject - I would say this is a very bad thing - what do you think?

zumbari said...

I've seen that although only rarely as I hardly ever use the flash that close. I don't think it's that bad of a thing. It's an unavoidable consequence of a built-in flash and a large extending lens which will cast a shadow on part of the scene when you get extremely close.

Any compact camera with a long extending lens (either due to large zoom range or large sensor) and close macro capability will have this problem with a built-in, non-popup flash. Eg., I'm sure the Canon SD900 would have the same problem.