Posted 16 April 2008 - 10:22 PM
Posted 16 April 2008 - 10:43 PM
Posted 17 April 2008 - 12:17 AM
Hi Boris, that link is helpful which lists the lenses and puts a value on the quality. Maybe we should start our own list, so that we can compare notes between each other. We will definitely be a small group - but exchanging information should be helpful on lenses, exposures, etc.
Nightfly posted the link
You can join the Pentaxastro yahoo group:
..it's about everything Pentax for astronomy.
Posted 17 April 2008 - 01:35 AM
Posted 17 April 2008 - 09:56 AM
Posted 18 April 2008 - 07:09 PM
Posted 18 April 2008 - 09:11 PM
Posted 18 April 2008 - 09:13 PM
Posted 18 April 2008 - 09:15 PM
Posted 18 April 2008 - 09:17 PM
I may get a wider rig where I can mount the Equinox with my OM-1 on the left side, the 80 Orion guide scope in the middle, and the 67 on the right. Mix and match.
Sorry about the lousy photo - *BLEEP* digital camera. Might take one tomorrow to show better detail.
Posted 18 April 2008 - 10:01 PM
Now I'm wondering how much use the Equinox 80 will get? It's 500mm, and that's not bad on a 35mm, but I suspect I'm really going to get hooked on medium format. I could sell the Equinox and look for a 500mm lens instead. No issues with focusing with the Stiletto device on a telescope. Set the lens to infinity and have at it. Sure simplifies things.
Posted 18 April 2008 - 10:21 PM
At least it should be hear in time for the Milky Way. In the meantime a grabbed some Fuji Colour print 160 for test shots for infinity etc. Plus a B&W roll - if my mind can ever get back to being creative again.
Posted 18 April 2008 - 10:51 PM
Medium format is addicting. The 500mm lens on the Pentax would be like a 250 in 35.
Posted 19 April 2008 - 12:13 AM
Tomorrow I go out into the woods and do the B&W film. I put a B & W filter on each lens. Nice glass. I'm hooked. The sound of that mirror when it's tripped - oh yea.
Now I'm thinking, and it's staring to hurt. The OM-1 with the Equinox apo (500mm F6.2) is nice for wide field cluster shots. But, you have to focus first with the camera on a bright star, remove it, install the STI Stiletto focuser, fine focus, lock the focuser and remove the STI and replace with the camera. Frame the object and start the exposure.
With a lens - probably need an 800mm to match the OM-1 - set lens to infinity, frame, set exposure, and shoot. Sure simplifies everything. Now I'm worried.
Maybe I should keep an eye out for a 2x teleconverter? I could use it with the Tec 140 scope. Hmmm.
Posted 19 April 2008 - 01:15 AM
Posted 20 April 2008 - 05:45 AM
Posted 20 April 2008 - 01:31 PM
My mind tried to deal with what was, and what I see now thru the viewfinder. A long row of tall trees just coming out of winter hibernation, still to bud, thick branches reaching into a pale hazy sky due to high thin clouds. The 90mm lens just fit the scene. I soon realized why the 45 or 55mm lenses are so sought after.
I walked along the walkway in the park with a different purpose - looking for an opportunity and letting the mind comprehend the new possibilities. I have to agree regarding the 300mm lens and filling the frame. Now I understand.
The Equinox 80 will be the guide scope, and is a sweet grab and go scope. I was going to make room on the cross bar for the 67 and the OM-1, but not any more. Ebay, here I come - again.
Posted 20 April 2008 - 02:22 PM
Posted 20 April 2008 - 03:01 PM
I'll opt for a standard SMC 67 300mm that will sell for $225.00 to $325.00. I've seen what this lens can do and can't wait to shoot with it.
The 200mm SMC 67 is a great lens as well, very sharp. All those photographers trading in their old film gear to go digital is a real boon for us film guys! Hope you find a great deal on these lenses.
Posted 20 April 2008 - 03:21 PM
Thinking on the many listings on Ebay, these lenses appear to be typically very well looked after. After dropping more than a grand on a new lens, who wouldn't? There seems to be a steady stream of lenses.
It might behove us to wait before bidding. Let these lenses go, as there are many after them. Give it awhile, where there is still demand, but fewer buyers?
Personally, I'm going stay reasonable in my bidding. Once that 55 lens gets up there I'm letting it go. There will be others coming along. I should have gone the "Buy Now" on that mint 165 F4 that just went, but again, there should be others.
I will be keep looking for one of those 300 ED lenses. That would be worth breaking the bank for.
Posted 20 April 2008 - 03:55 PM
Now you know why I only use 35 for astro shots. More power to the digital guys, but, I've always wondered how many of them who question us that use film. Take their antique car to car shows, fix tube radios, or shop at antique stores.The used medium format pro cameras are the best.The only thing that people need to know is that since alot of them were severly used by pros, that a person might find that it needs a overhaul. But, since so many of them can be bought so cheaply. it is still a good deal.