Boy you guys had excellent results all of you. I don't think I have gotten more than 45 or so in any given night, because I usually do it from home and usually...
Do the math, 16" scopes are quantum leaps in light gathering area..... ... From: "breslybruin" <LOVEOURLIFE@...> To: <Discovery-Dob-Users@yahoogroups.com>...
One thing for sure, make sure, they note the f/ratio of various primary mirrors... They had just got in 17.5" f/5 mirrors and told me my 17.5" f/4 mirror was ...
They may be sleeks, not scratches also... John S. ... From: "Dave Bush" <albireo@...> To: <Discovery-Dob-Users@yahoogroups.com> Sent: Sunday, March 30,...
Don't feel so bad, I waited 18 months for my 'scope! (17.5" Truss) Much like yourself, I was strung along with excuse after excuse. Their product is very good,...
Hi Gary, Well I don't have an exact measure of where the point of focus is on your scope, but this is the info you need: The focal length of the telescope. For...
... Ahh yes, I understand; however, I have not yet received my scope so I was hoping to learn this from someone who has a scope in their hands. Gary Weber...
... on ... novice. ... suggest ... The focal length can vary + - 6mm on any mirror of a f/ratio, plus the collimation point the primary is in the cell,+ -...
Just doing a little daydreaming and was wondering about the pretty dusty mirror in my 12.5 PDHQ. When shining a flashlight down the tube, the mirror does...
Bob Despite what I said before (not to clean your mirror!!) I do want to point out that I usually DO clean my mirrors about once a year due to dust. And...
... Replying to myself... This is another site worth checking... http://www.ghgcorp.com/cshaw/clean.htm Evidently this stuff is used on some very big...
Interesting for sure.... John S. ... From: "Joe Cannavo" <jpcannavo@...> To: <Discovery-Dob-Users@yahoogroups.com> Sent: Wednesday, April 02, 2003 5:36...
Tom, I like reading your observing reports, and I have started modeling my own reports after yours. I always enjoy your creative titles :) Congratulations on...
Tim: You might want to go ahead and nab Porrima (Gamma Virginis) while you can with your 10". It is currently near its minimum separation. I was able to get...
Joe, Haven't used it myself. Just take care of all the warnings and use outdoors. It contains ether as the suspension medium and is nasty if confined. Don ... ...
Joe, I've read several favorable reports from Collodian users, but I have never used it myself. Nor have I seen any endorsements of it from any of the major...
Alcohol should never be used to clean a mirror. It can damage the coatings. John Kuhl -- In Discovery-Dob-Users@yahoogroups.com, "discovery10pdhq" ... when ......
... Some manufacturers recommend an isopropyl alchohol rinse after rinsing with distilled water. I've done this for over 27 years and never damaged a mirror. ...
In the meantime, I ... It does sound like daredevilish. Ive never tried it. My past fav technique was to take an atomizing hand pump spray bottle fiiled with...
Ed, I have also used diluted isopropyl alcohol for many years with good results and no problems. (I only use a small amount in distilled water for rinsing.)...
Well I have the money saved up, spoke to Bill at discovery today. I will be sending in a deposit for a 15" f5 PDHQ, split tube with observers package (35mm...
... Hi Joe! For something a little better than a Plossl that won't break the bank, why don't you try one of the Orion Epic ED's? I've got three of those, and...
... I used the final rinse with iso alchohol and it appeared to work fine...until I noticed a pretty rainbow streak that ran from the center of the mirror to...
... Ed, What scope are you using? I'm going with the 15" because I finally want to get deeper into deep sky. Im on the east coast, but will be able to...
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