Thanks.

Not a simple answer. Non-photography fans may want to tune out here.... This was with my Nikon D70, shot in raw (NEF), with very minor post-processing. Shutter speed was 1/320. No camera lens in this shot, the D70 was mounted directly to a Televue 85 mm (diameter) apochromatic refractor with a T-ring and a Televue adaptor. Some shots are prime focus (no eyepiece) but I typically shoot with eyepiece projection using a variety of Televue Radian and Nagler eyepieces. I am not sure which one I used in that shot. The refractor is a 600 mm F7, pretty good quality. With the eyepiece mounted, it is likely up in the range of an effective 2000 - 8000 mm photographic lens. All this is mounted on a Bogen tripod, no telescope motor drive. You've got to be quick, it stays in the field of vision for less than five or ten seconds.

This setup is completely manual, there is no metering, which is why I used the sample shot in my original response regarding metering issues for night shots. Also, the attachment is under 100 KB, and the original shot was 4.3 MB, so if it looks acceptable at all it is amazing. I use it at full resolution in presentations I do at work, it looks pretty good on a big monitor or an LCD projector.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue