... That actually looks like what happens when a bulldozer is used to dig a big hole, so they need to leave a ramp for the bulldozer to get back out ;) -John ...
Does anyone make a multi position eyepiece/diagonal finder? Saw a Toucan 50 spoting scope from William Optics that doesn't look like it could be mounted as a...
I have a C9.25 on a Discount that sits pretty low and want to add a reticle finder to complement the right angle finder I have on the scope. I was thinking of...
My friend's SV right angle finder is pretty outstandng, I think it takes a real eyepiece (and you can change eyepieces). It really does double service as a...
Hi all, Has anyone used a Helical focuser between the diagonal and EP on their SCT? I'm thinking of getting one for my C8 for fine focusing especially at high ...
... their SCT? ... at high ... Jeremy, I do no imaging, but have used a Borg helical between the rear cell and diagonal, without issue. Good luck. David Neal...
... This depends on the focusser. The cheapest/simplest units will rotate, but better units don't. On the Borg units for example, only the cheapest (the 4317)...
Has anyone had any experience with a Crayford-style focuser? Pros and cons? Also, does a Crayford-style focuser create back-focus problems when used for...
Hi; No cons that I know of. If can create problems if you're going to be using it following a Meade/Celestron reducer in the imaging chain...you may not be ...
Hi Terry, I am not an expert, but, in my experience, there almost no cons when using a Crayford focuser on an SCT. It might produce a slightly longer focal...
Terry, I use a Crayford-style all the time. It's a great improvement, since it eliminates mirror movements during focusing and provides fine control. I used a...
I have a C8 that I am very happy with and am wondering if there is anything I can do to minimize the stars being out of focus (field curvature?) when viewing...
Well, there are different brands: JMI, FeatherTouch, Moonlite, William Optics, etc... Manual and electronic motorized ones. Just have a look at different...
moonlite focusers can be viewed here: http://www.focuser.com They will make one for your scope if they don't have it. Then they have the specs and can add...
Hi Dave, Let me jump in here. I have a CeleStar 8 and a NexStar 11 GPS. Both have 2-inch diagonals and use a 41 mm Panoptic, 26 mm Nagler and 17 mm Nagler ...
Hi, Since we are talking about Crayford focusers. Could anybody tell if there would be a problem reaching focus when adding a 0.63x F/R between a C8 and the...
But maybe that's normal. Here's what happened: I am overhauling my 21-year old C8 - flocking, regreasing the shaft for the primary, etc. Looking at the...
It is normal to be able to see a bright light and pinholes through the aluminum coating of a mirror. The coating would eventually go bad, but I don't know how...
Kevin, It sounds like you need to recoat the mirror. You should not see any holes. Clear skies, "Dollar" Bill Logan, Director and Chief Astronomer Robert...
Hi: Vignetting? No. Focus problems? Probably...with some diagonals and eyepieces, especially 2-inch diagonals, anyway. Peace, Rod Mollise Author of: Choosing...
Hi Bill, Thank for the information and I may try different eyepieces. I should have mentioned in my first post that I am mostly using the 22mm Nagler with the...
... Thank you, Rod. Will a CCD (SAC10 in my case) having problems reaching focus with this setup (having the 0.63x FR between the scope and the Crayford)? Eddy...
Hi: Well, you probably could stand to have the primary recoated...but none of this will have much effect on images. Peace, Rod Mollise Author of: Choosing and...
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