Hi, My scope is a 12.5" f5 PDHQ. Been thinking of getting a binoviewer (Denkmeier standard). I realize I will need some type of optical corrector in order to...
... binoviewer (Denkmeier standard). I would call Denkmeier. Russ, the technical guru is usually the guy that answers the phone. He should be able to answer...
Has anybody ever had experience with or own an automatic dob driver? I was looking at the DDR2-Sys by Tech 2000. Any information would be helpful. db ...
Can someone tell me what the DSC resolution is on the old (about 2002) Discovery Star Finder encoders is? I would guess 4000, but the Sky Commander cables for...
I am new to the sport of Astronomy, and recently purchased a discovery 12.5 PDHQ. Now I suspect that there is constant debate over the best eyepieces and I am...
I have a 12.5" split tube Discovery. If you are only going to need 2 or 3 eyepieces, I'll give you my suggestion. The 31 Nagler, only because of reviews. A...
... discovery ... However, my goal is to have a set of 2-3 must have pieces that I will ... market. DB My experience is narrow having only used televue. I did...
Yipes, Your comment, "I suspect that there is constant debate over the best eyepieces and I am sure that everybody has their favorite..." is dead-on. There are...
I bought a 32mm super plossel eyepiece from Owl for $27.00. I use it in my 11" Starmaster and 12.5" Discovery TD as a finder eyepiece. It is a real bargin for...
All good advice. thanks. ... _________________________________________________________________ Try Search Survival Kits: Fix up your home and better handle...
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Discovery-Dob-Users group. File :...
Discovery-Dob-Users@y...
Oct 17, 2006 3:14 pm
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There are around 1200 different eyepieces available to the American amateur astronomer. I will post the latest version of my Buyer's guide to this site in...
Very impressive list there Don. Some surprises as I read down the column, (examp. Baader ortho's are 47 deg. AFOV?). I had one for a while but didn't like the...
Mike, In absence of test data, I had to use the mfr's info/claims. Your comment about the Ortho reminds me of a similar eyepiece I bought in the '80s. I...
Wow! Thats an impressive list and alot of detailed information. I know this is not practical, but you could probably copyright and sell the list if you added...
My purpose in making the guide was to "give something back" to the astronomical community that has given me so much. I update this list every day (a few...
How hard is it to remove the center mark that comes with these scopes? I've heard you shouldn't even attempt it on a brand new mirror because of the coatings...
Remember that the center of your mirror is in the shadow of the secondary and therefore the center has no effect on the scopes performance. You could stick the...
Lou makes a good point; however, I recommend that the CATSEYE acetate overlay spotting template be used to apply the CATSEYE Triangle as it assures the most...
Chris, I have a 12.5 PDHQ and use the barlowed laser method developed by Nils Olof Carlin http://gmpexpress.net/~tomhole/blaser.pdf It really is very, very...
The Barlowed laser is a wonderful tool for setting the tilt of the Primary axis but does absolutely nothing for collimating the focuser axis. For maximum...
I recently received my 12.5 split tube telescope from Discovery. (My First!) I attempted to install the primary mirror. It was difficult to say the least....
... to ... It does not matter. It will have no effect on achieving collimation. Thoeretically it would slightly affect the aiming accurracy of digital setting...
Thanks for the info!! I am very excited. db ... _________________________________________________________________ Use your PC to make calls at very low rates ...
I think that Jim is making a good point, although I may rub him the wrong way in my recommendation. I use a Cat's Eye for indoor set up on my small scopes and...
Hi Lou, It sounds like you are referring to a 1.25" "CATSEYE" for use on your small scopes. This is a "Cheshire" device and has exactly the same functionality...
I'm not technical in these types of things. Would you know what wave this mirror might be considered? Like a 1/4 or 1/8 or something? RMS: .024 P-V: .16 Strehl...
Peak-to-Valley, it is about a 1/6th wave mirror. It is also a Peak to Valley +/- 1/12th wave mirror. It could also be described as a 1/42nd wave mirror, or a...
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