A very good 80/400?

[Fedele]

Hi

 

Can you recommend an excellent Achromat 80/400? Metal OTA and Fok

 

thanks

[JeremyS]

No I’m afraid I cannot @Fedele

[johninderby]

The Opticstar 80mm f/5 had pretty good optics for a fast achro. Should be able to find it under another brand somewhere. 

http://www.opticstar.com/Run/Astronomy/Astro-Telescopes-Opticstar.asp?p=0_10_1_1_53

Edited November 24, 2021 by johninderby

[johninderby]

I see that Opticstar say the 80s guidescope version is “incoming”.

https://www.meadeuk.com/Opticstar-AR80S-Guidescope.html

Edited November 24, 2021 by johninderby

[vlaiv]

Excellent 80/400 with metal OTA and focuser?

https://www.firstlightoptics.com/esprit-professional-refractors/skywatcher-esprit-ed-80-pro-triplet.html

You might be slightly annoyed by the lack of purple fringing, but otherwise it will be rather good

[johninderby]

Or…….🤔

https://astrograph.net/epages/www_astrograph_net.sf/en_GB/?ObjectPath=/Shops/www_astrograph_net/Products/AGTEC80OWL

[vlaiv]

2 minutes ago, johninderby said:

Or…….🤔

https://astrograph.net/epages/www_astrograph_net.sf/en_GB/?ObjectPath=/Shops/www_astrograph_net/Products/AGTEC80OWL

Yeah, but that is 80/480 and not 80/400

 

[nicoscy]

Any 80/400 achromat will do, Omegon has them, Skywatcher has them, they come under different names.

If you want metal focuser, then that is an after market job to replace the focuser, which you can do yourself.

Many do so and use these as super-wide field scopes since they provide 6.35° TFOV with a Nagler 31mm.