That and the Pleiades photo are really impressive pictures, what sort of lens you need for that?
Thanks. I use my EF 600mm f/4 L II right now, which doubles as a very high end telescope. It's similar in IQ to the Officina Stellare Hiper APO 150mm, which is about $11,500.
Hmm... I thought most super telephoto lens are not as good as telescope for imaging... how's the edge performance of the EF 600mm F4 L II??
As I stated, the 600/4 II has stellar corner performance. The field is extremely flat, a kind of flat that you have to spend tens of thousands of dollars for with a real telescope. The Canon superteles are used very often for astrophotography. There are even ultra sensitive, ultra high speed imaging arrays that use dozens of Canon EF 400mm f/2.8 L II lenses with FLI cameras to image some of the faintest stuff in the universe.
Canon L-series superteles make excellent telescopes. I don't know about other teles or superteles, but Canon's L-series superteles are extremely good.
Anyway, I saw my friend's 130mm f6 StarFire and it's super sharp right to the edge, but the waiting list is 7 to 10 years...
Have a nice day.
The StarFire is an Astro-Physics scope. Astro-Physics makes excellent quality products, however they are pretty costly. From what I understand, AP is no longer making that particular scope...they stopped making it years ago (maybe even over a decade ago), so there isn't a waiting list, they simply aren't available unless you buy them used (and owners don't generally sell them). There is a newer 130mm f/6.3 StarFire that is currently in production, however it doesn't take years to get them...if it did, no one would even bother, that would just be ludicrous.
AP mounts are some of the best in the world, and in such demand and built literally with hand-made quality, that their order-to-delivery lead time is around eight months right now. (I.e. if you order an AP mount today, it wouldn't even start being manufactured and assembled until about six months out or so, and wouldn't be shipped until at least eight months out.) I figure the StarFires have a similar lead time, but I don't know of anyone who has had to wait over a year for any AP product lately. They just don't mass-manufacture, they don't even start manufacturing until they get an order, and it is truly hand-made quality (assembly is all done by hand, each and every product made is manually tested for quality and optimized for best performance, especially for mounts with absolute encoding, etc.) It's the price you pay to get high end, high quality astronomy and astrophotography equipment. It is not easy or quick to ramp up new people with the skill level required to deliver that kind of quality (although from what I have heard, companies like Astro-Physics are training new people to improve their turnaround.)