The video camera I use is rated at 0.0003 lux. Using that 50 mm F1.4 lens I can see stars down to around mag 9. Since the camera is sensitive to different frequencies of light, the spectral tyoe of star will effect what the faintest star can be seen. I piggy-back my video camera to the scope, a skywatcher 70 mm refractor. If use the prime focus method, then the scope would act as a 900 mm F12 lens for the video camera. But then the feild of view is narrow, and I can't see as faint. So I use the piggy-back method. I use the video camera as a my way of star hopping. Kevin ===== COSPAR Site #1775 Long 75.6910 W, Lat 44.6062 N, altitude 100 metres __________________________________ Do you Yahoo!? Yahoo! Hotjobs: Enter the "Signing Bonus" Sweepstakes http://hotjobs.sweepstakes.yahoo.com/signingbonus ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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