Anyone tried these? 2000mm Telescope lens

[WVCoalMiner]

You are bidding on Brand New 1200-90mm telescope with DSLR Camera mount
It's a powerful 1200mm objective focus length. It should increase to 1800-2000mm for most DSLR..
(Duo to effective angle of view for most DLSR is 1.5x /1.6x focal length)
You can take impressive pictures of the moon, planets and other celestial objects.
It also take extraordinary pictures of shy or wild animals or of a spectacular natural phenomenon as a volcanic eruption.Objective diameter : 90mm
Focal Length: 1200mm (F13)
Faintest discernable stars: 11.7M!
Dawes Limit: 1.3 arc-seconds
Eyepieces: 16mm 1.25” (31.7mm)
Magnification: PL 16mm/75-fold
Weight: ca. 2.5kg
Extremely versatile telescope-scope for celestial and terrestrial observations!
standard camera tripod mount >> you can attach any common camera and video tripod
http://cgi.ebay.com/2000mm-Telescope-for-Canon-Rebel-XS-XSi-XTi-T1i-5D-50D

[Marcel Alexandre]

I just purchased one of this , it will be here in about 10 days , so... will give you a review if U still need. I asked a few days ago here
1200mm mirror lens

Got some answers but as I still new there are some concepts I still need to look up in the glossary , so I bought it and now waiting for it.
Will let you know as soon as I get it. Only thing I know for sure is that is heavy as a bad matrimony ...

[WVCoalMiner]

So what I am reading from the replies in your thread is you'll need a tripod and Looooonnngggg shutter times to get enough light in for a decent picture.

[DogHeadGod]

I can't comment on the lens you're looking at, but if you plan to take astro images with it you will need a motorised mount as the stars move really quickly though the frame at high magnifications

This is what I managed through my (computerised) telescope with my dSLR, Jupiter and it's main moons


Here is one through my 500mm sigma with a 2x teleconverter attached (i.e. 1000mm) to give you some idea if what you'd get from a bigger lens.

[m.c.adams]

This is a shot I took with my rebel xt, with a Sigma 600mm mirror lens at x1.6 would be 900mm. Used a tripod, cable shutter release, and with the mirror locked up.
Mark