Jump to content

NLCbanner2024.jpg.2478be509670e60c2d6efd04834b8b47.jpg

Finding a telescope or binocs for 60$


Recommended Posts

  • Replies 26
  • Created
  • Last Reply

As I said in the reply to your message -

In theory it shows the same as any other 76mm reflector telescope.

Alex posted a great link and I sent you a link to a image of different sketches and pictures through the finder to give you a expression of aparent field of view and outer blur.

The clones (such as from Relaxdays or Seben) don't have a finderscope and AFAIK adjusting involves tinkering. That's the worst part in my oppinion, but they still work.

But:

A 76mm newton with 900mm will have less issues with spherical abberation, Koma and a sharp(er) outer field on cheap eyepieces.

Under f/6 these things get an issue, and the 76/300 has a aperture ratio of f/4 (focal length devided byaperture), making it harder to collimate too.

Overall the 76/900 would be the better choice, though sells for more then any of the 76/300, but still comes with a weak tripod & mount.

And the 76/300 does however fit into a backpack easily and the dobsonian mount is very stable. So they all have their up and downs, really.

I just tried it yesterday with the Kellner-Eyepieces. Even with 4mm eyepiece Saturn is tiny, the rings visible but just as small "ears".

With more expensive eyepieces and higher magnification it's better.

I don't understand why the brand name 76/300 only come with 10 and 20mm eyepieces, even with a barlow planets are still tiny.

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.