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I took delivery of a Skywatcher 200p last night and got it set up ok I think. I got a good view of Jupiter with the 25mm lens but when I put the Barlow lens in I couldn't focus it.
I also tried the 10mm lens but it made everything grey, no real light comes in at all. It came with a thing that might be called a focuser extension, not sure, but it didn't help.
What rookie mistakes am I making?
I'm very very new to this - so be gentle with me! I've inherited a Helios 150 telescope which I'm learning how to work. I observed the Moon through this a few years back, and it was brilliant, and I'm keen to share the sight with my children.
The problem is I can't seem to focus the view finder. I can find the Moon of the spotter scope, very clearly, but when I look through the main eyepiece - a PLOSSL 10mm - I can see the light of the Moon in the back ground , but can only seem to focus on tree branches that are in the foreground- very clear relief - in the foreground.
What am I doing wrong, and how do I fix it if possible? Very grateful for any replies. Thanks.
New challenge I am running into. When I add a filter wheel on my Bresser AR102s I run out of travel when trying to focus in. I have removed all the extensions and still can't focus in. Am I out of luck or is there something I can do? I am reading up on Focal Extenders am I heading down the right path?
Thanks for your help.
I recently acquired a Meade Lightbridge 16" scope (f 4.5), and realized that I'm unable to focus with my barlow attached ( the barlow is a Celestron X-Cel LX 3x barlow). After some experimentation, I found that it's because the focal plane of the primary is too short - it's just at the end of the focuser when it's fully retracted. By removing the 2"-1.25" adapter, I found that I'm able to focus with the barlow if it can go about 6 mm further in.
Other than cutting my truss tubes to shorten them, or buying a lower profile focuser, is there any cheap, DIY method by which I can achieve focus?
An astronomer friend of mine suggested fully tightening all the primary collimation knobs, so that the primary mirror moves up a little inside the OTA, thus bringing the focus further out of the focuser, but that didn't help ( it probably moved upwards only by a couple of millimeters)