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Re: Recipe for producing a 102mm semi-apo

Started by hakescl, 05/15/2002 03:07PM
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Posted 05/15/2002 03:07PM Opening Post
Charles Hakes
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Join Date: Jun 2001

Location: Durango CO, US

Posts: 690

What about just starting with a nice f15 lens?

Charlie
Quote
Fort Lewis Observatory: (37.238, -108.052) ~2360m (7744 ft.) elevation.
Darkness - typically 6.5+
Scope - Meade 16" LX200; f6.3 focal reducer
Focus - JMI Smart focus
Camera - SBIG ST-10XE; (~.5"/pixel)
Guiding - AO-8 and/or Meade 5"/DSI/PHD
http://www.fortlewis.edu/observatory
Posted 05/16/2002 04:57PM #1
Charles Hakes
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Join Date: Jun 2001

Location: Durango CO, US

Posts: 690

Apogee has new lenses like that (102mm F15) for $250. I use an old Edmund scope that works great. Haven't looked at who sells them now. You are right - it is very long and unwieldy. But the images are great.

Charlie


Quote
Fort Lewis Observatory: (37.238, -108.052) ~2360m (7744 ft.) elevation.
Darkness - typically 6.5+
Scope - Meade 16" LX200; f6.3 focal reducer
Focus - JMI Smart focus
Camera - SBIG ST-10XE; (~.5"/pixel)
Guiding - AO-8 and/or Meade 5"/DSI/PHD
http://www.fortlewis.edu/observatory
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