I was wondering if people would rather have an f/4.5 or an f/5 dobsonian reflector. I've looked through both and can't see any major difference. The f/5 scope would be easier to collimate but the f/4.5 would be easier on my knees. What do you guys/gals think? Debbie
Quoting Debbie <astrodeb@earthlink.net>:
I was wondering if people would rather have an f/4.5 or an f/5 dobsonian reflector. I've looked through both and can't see any major difference. The f/5 scope would be easier to collimate but the f/4.5 would be easier on my knees. What do you guys/gals think?
Debbie
Debbie, Since my knees are still fairly good, then you should go with the scope that requires the least amount of set up time so I don't have to stand around waiting to look through it. ;) Who cares what others think, pick the scope that is going to provide you the most comfort at the eyepiece. After all, if your knees hurt so bad that it cuts your "eyepiece" time short, what good is that? On the other hand, you may need to show up at the site earlier than normal so that you can take the necessary time to iron out the optical bugs before the show starts. Good luck. Guy
What Diameter are you considering? For a 24" scope, I would say F4.5 for the sake of saving the foot higher up on the ladder I would need to go to look through the eyepiece. For any size under 16" I do not think that small a difference would matter much in the height, and certainly not much for the view. Lisa Zeigler www.johnstelescopes.com www.mirrorkits.com -----Original Message----- From: Debbie [mailto:astrodeb@earthlink.net] Sent: Tuesday, August 24, 2004 10:34 AM To: Utah Astronomy Subject: [Utah-astronomy] f/4.5 or f/5 I was wondering if people would rather have an f/4.5 or an f/5 dobsonian reflector. I've looked through both and can't see any major difference. The f/5 scope would be easier to collimate but the f/4.5 would be easier on my knees. What do you guys/gals think? Debbie _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.utahastronomy.com
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Debbie -
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John and Lisa Zeigler