anabasis Posted June 13, 2013 Share #1  Posted June 13, 2013 Advertisement (gone after registration) With the recent addition of a T-OR Ocular, I now have a "Leica Telescope."  This particular configuration of a APO Telyt-R 800mm f5.6 provides 64x magnification with the 12.5mm ocular. I estimate the FOV to be about 40' of arc based on the view of the moon.  It was strong enough to take a nice look at the rings of Saturn and a detailed view of the moon's surface.  Attaching the ocular to a 90mm Summicron makes for a nice 7.2x monocular that is far easier to handle.  JCA Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/206767-leica-telescope/?do=findComment&comment=2347831'>More sharing options...
guyhein Posted June 13, 2013 Share #2 Â Posted June 13, 2013 With the recent addition of a T-OR Ocular, I now have a "Leica Telescope."Â This particular configuration of a APO Telyt-R 800mm f5.6 provides 64x magnification with the 12.5mm ocular. I estimate the FOV to be about 40' of arc based on the view of the moon. Â It was strong enough to take a nice look at the rings of Saturn and a detailed view of the moon's surface. Â Attaching the ocular to a 90mm Summicron makes for a nice 7.2x monocular that is far easier to handle. Â JCA Â Good idea!!!! Congratulations! Guy (amateur astronomer) Link to post Share on other sites More sharing options...
naturephoto1 Posted June 13, 2013 Share #3 Â Posted June 13, 2013 Superb performer with many different R lenses. Best performing spotting scope available with the 800mm modular lens. Â Rich Link to post Share on other sites More sharing options...
Bill Allsopp Posted June 13, 2013 Share #4 Â Posted June 13, 2013 ...It was strong enough to take a nice look at the rings of Saturn ... Â Wow! Link to post Share on other sites More sharing options...
dkCambridgeshire Posted July 6, 2013 Share #5 Â Posted July 6, 2013 One of those 800/5.6 modular lenses is listed in the UK ... not at a Leica Premier dealer ... seek and you might find. And I recall they can be modified to fit the S2. Â dunk Link to post Share on other sites More sharing options...
sc_rufctr Posted July 6, 2013 Share #6  Posted July 6, 2013 One of those 800/5.6 modular lenses is listed in the UK ... not at a Leica Premier dealer ... seek and you might find. And I recall they can be modified to fit the S2. dunk  They can be modified to fit the S2 but they "loose" a bit in the corners. I actually like the look. But you have to permanently modify the mount.  Maybe not so bad if someone makes an S to R adapter. Link to post Share on other sites More sharing options...
luigi bertolotti Posted July 6, 2013 Share #7 Â Posted July 6, 2013 Advertisement (gone after registration) Wonderful !!! Which is the brand of the ocular ? Now, if only you can find a motor... (but if you are an astronomer, maybe you have already a motorized tripod + equatorial mount) Link to post Share on other sites More sharing options...
dkCambridgeshire Posted July 6, 2013 Share #8  Posted July 6, 2013 Wonderful !!! Which is the brand of the ocular ? Now, if only you can find a motor... (but if you are an astronomer, maybe you have already a motorized tripod + equatorial mount)  I have one of these on order but the maximum load is only 3kg.  http://www.ioptron.com/pdf_articles/ST_SkyTracker_review.pdf  dunk Link to post Share on other sites More sharing options...
ph. Posted July 6, 2013 Share #9 Â Posted July 6, 2013 the ocular is a "standard" Leitz R accessory. Very handy. Â p. Link to post Share on other sites More sharing options...
luigi bertolotti Posted July 8, 2013 Share #10  Posted July 8, 2013 I have one of these on order but the maximum load is only 3kg. http://www.ioptron.com/pdf_articles/ST_SkyTracker_review.pdf  dunk Great accessory ! Thanks for the link, Dunk ! 3Kg is indeed a rather lightweight... ... but an old Telyt 560 with a not too heavy body (a Nex or Oly) can stay within.... Link to post Share on other sites More sharing options...
dkCambridgeshire Posted July 8, 2013 Share #11  Posted July 8, 2013 Great accessory ! Thanks for the link, Dunk ! 3Kg is indeed a rather lightweight... ... but a Telyt 560 with something not to heavy (a Nex or Oly) can stay into....  There's a batch of the latest model due to arrive in Europe imminently ... I'm waiting advice from a dealer re same ... he will bill me as soon as one is available. But it's unlikely I'll use mine until September when my local astronomy society resumes observing trips and star parties - there is too much light pollution in my garden - I have a street light next to my back garden gate.  Beware Luigi ... 560mm might be too long a focal length ... I think the recommended maximum is very much less but I need to check the small print.  Best wishes  dunk Link to post Share on other sites More sharing options...
-ph- Posted July 8, 2013 Share #12 Â Posted July 8, 2013 The SkyTracker looks like it is great for mounting a Leica M with lenses up to 100mm focal length, but I would not put anything more heavy onto it. I have the AstroTrac mount, and while I was able to mount a 500mm refractor on it, it was extremely borderline, not to recommend. And the AstroTrac is much beefier than the StarTracker. So for wide-angle, those small trackers are great, but for longer focal lengths, get a proper mount. And taking all costs into respect, an SkyWatcher EQ5 or EQ6 is not so much more expensive than those smaller trackers, but in quite a different league, performance-wise. Â Peter Link to post Share on other sites More sharing options...
dkCambridgeshire Posted July 8, 2013 Share #13  Posted July 8, 2013 The SkyTracker looks like it is great for mounting a Leica M with lenses up to 100mm focal length, but I would not put anything more heavy onto it. I have the AstroTrac mount, and while I was able to mount a 500mm refractor on it, it was extremely borderline, not to recommend. And the AstroTrac is much beefier than the StarTracker. So for wide-angle, those small trackers are great, but for longer focal lengths, get a proper mount. And taking all costs into respect, an SkyWatcher EQ5 or EQ6 is not so much more expensive than those smaller trackers, but in quite a different league, performance-wise. Peter  I'm planning to use the iOptron Skytracker with an astro modified Canon 1100D and my Leica R lenses up to 180mm - maybe 280mm if possible - but will also be using optional Magic Lantern firmware which provides an intervalometer for the camera.  dunk Link to post Share on other sites More sharing options...
-ph- Posted July 9, 2013 Share #14 Â Posted July 9, 2013 I'm planning to use the iOptron Skytracker with an astro modified Canon 1100D and my Leica R lenses up to 180mm - maybe 280mm if possible - but will also be using optional Magic Lantern firmware which provides an intervalometer for the camera. Â I would be very interested to see how good the results unguided with those focal lengths are going to be. For how long exposure times are you planning? Â Peter Link to post Share on other sites More sharing options...
dkCambridgeshire Posted July 9, 2013 Share #15  Posted July 9, 2013 I would be very interested to see how good the results unguided with those focal lengths are going to be. For how long exposure times are you planning? Peter  Nothing firm is planned yet as I'm fairly new to astrophotography and previously have only attempted same with film cameras. I am still researching, reading and making notes - and have yet to buy the modified 1100D astro camera. I'm waiting until the Startracker is available before buying the camera. The camera will be purchased from a specialist who modifies used and 'new old stock' Canon DSLRs (mainly 1100D and 450D models) for astrophotography and who offers various sensor filter modifications. I'm still deciding on the actual type of filter modification.  Last January I took on the responsibility of volunteering to be the observing co-ordinator for my local astronomical society but I only use binoculars whereas all my colleagues use 'scopes. Rather than buy a 'scope I recently decided to start using my existing Leica camera lenses for astrophotography, thus take in 'the wider view' ... and try and record detail not visible to the naked eye or through my binoculars. The modified astro camera will help in this respect. I'd like to buy a 'scope - but it would have to be a decent model and it's outside my budget at the moment. Meantime I'm happy to observe with my binoculars and looking forward to experimenting with the Startracker which seems to be good value, has good reviews, and is within my budget.  iOptron's SkyTracker is Highly Rated by Sky and Telescope Magazine: Astrophotography Talk Forum Forum: Digital Photography Review  Telescope Reviews: iOptron SkyTracker  Anyone tried the iOptron Skytracker yet? - Discussions - Mounts - Stargazers Lounge  dunk Link to post Share on other sites More sharing options...
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