90° pointer diverter Polar Angle Finder

I find it difficult to see the viewfinder on my equatorial mount polar and therefore use a lot of time and effort to set telescoper. Is there anything that can help me?

HD Video and picture thanks tripod use in ARRAKIS

I bought a camera that makes photos and HD video but I can not take good shots, the images are not sharp. Why is that?

Micro 4/3 adapter to Contax G lens

I have a Contax G lens. I would mount it to my micro 4/3 camera. Do you have a connection?

Leitz Elmarit 90 2.8 (old type), Leica R to Nikon: change

I wanted to apply your article 3032 on the Nikon but I noticed that cam is not removable as seen in the video instructions on the page of the article.

Calibration and regolation adapter ring

Last year, i bought an adapter ring. Now lens not good, moves. What i do?

Adapter ring to AATON 16mm

I have a 16mm AATON old camera. It`s possible utilize these lenses? Where?

Bellow

Do you have a cheap bellow?

T4 granft lens to Nikon/Canon camera

I have a Vivitar lens with interchangeble graft but i don`t know what is it. Attached picture.

Extensible tripod for binoculars and telescopes with micrometric movements

I cannot point object with my 25x100 binocular. There is a tripod with micrometric movements?

International Space Station ISS

Is it possible take a photo satellites?

Flyby Asteroid 2012 DA14 - Viewing orbit

It is possible to shoot the asteroids?

It is possible to analyze the light from the ceiling lights, its spectral emissions, to quantify the brightness and different lengths Waveform?

Introduction to Astronomical Starwindows Cupola 2013-4-7

www.starwindow.it

What`s Starwindow cupola (3673 item) maximum diameter?