Hola.. alguien del foro tiene idea cuales son las medidas del espejo primario y secundario del dobson flex tube sky whatcher de 10 . Gracias

~

And, why aperture matters.

:

:

.

I just bought a Pentax XF 6.5-19mm zoom eyepiece. These prices are in AUD.
these eyepieces that usually retail at Astro shops for AUD400(USD270)....

Thinking about trying one of these to keep plugged in to one of my f5s for fast grab-n-go use when I don't want to take out my EP case. Pretty...

Has anyone tried any of the UWA EPs from Astro-Tech? I just stumbled across them today and became curious about their performance.

They can be found...

I owned 3 pairs of binoculars, a very compact pair of Pentax 8x25mm(for travel), a larger pair of Orion 9x63mm(for astro) and a very old pair of...

Anybody have eyes-on experience with Astrotech PF EPs? I thought I might try one as a spare just for grins since they're only $60 or so.

Under their own brand name, Orion sells a range of (advertised) 20mm eye relief 80° AFOV eyepieces.
They are 4.5mm, 6mm, 9mm all 1.25 fit, and two 2...

Astro Hutech is showing a full line of new Masuyama eyepieces.
No pricing at the moment but hopefully they will update and be in stock soon.

These...

Sunday, September 24, 2023
Where: My backyard in Arizona
Target: Saturn

Telescope: Meade 127mn f/9.3 refractor on a Skywatcher EQ6R-PRO w/WiFi

The...

Hi Everyone,
How well do zoom EPs work with binoviewers?
Thanks Michael

My 9.25 (235mm) F10 SCT has a focal length of 2350mm. I put an F6.3 focal reducer on it which should, according to the maths, reduce my focal length...

I was wondering if anyone here could chime in on what type of lens elements this could be? A friend of mine gave this to me the other day for free. I...

I received an email from Agena with some good sales, especially on ES EPs, especially the 68°s

i have aquired a celestron 12mm eyepiece model number 93305 from 1988 in a model rocket box i got from a family friend and I'm not sure what to do...

I wanted these Meade HD-60 eyepieces before they were discontinued, saw the whole set up for sale for a decent price and was lucky enough to snatch...

If anyone has considered converting their Synta 150 mm f/8 refractor to a APM 152 mm f/7.9 ED doublet, Teleskop-Service has one left.
APM has decided...

These eyepieces popped up in a thread on another forum and we are looking for anyone who may have given them a try.