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Optec Lepus 0.62X with 1900/127 MCT

Maksutov Accessories
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#1 Nicole Sharp

Nicole Sharp

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Posted 24 November 2021 - 06:32 PM

Any idea if an Optec Lepus 0.62X reducer will work with a 1900/127 Maksutov-Cassegrain telescope?

 

The Optec Lepus requires a 2-inch visual back, so a 1.25-inch to 2-inch adapter would need to be inserted between the 1.25-inch visual back and the 2-inch focal reducer.  Not sure how that would work with a Canon APS-C DSLR camera (44 mm flange distance and sensor height of 14.9 mm).  The image circle diameter for a 1900/127 MCT is presumably about 27 mm, so reducing by 0.5X might be too much as compared to 0.62X (for a 14.9-mm sensor size).

 

Any other suggestions for DSLR focal reduction with a 1900/127 MCT would be appreciated.  For a 1540/127 MCT, I figure the Lepus 0.62X reducer would work better on the Sky-Watcher Skymax 127 since it already has a 2-inch visual back (unlike the Orion Apex 127 or Celestron C127).

 

https://www.optecinc...lepus/index.htm

 

https://www.bresser....tical-Tube.html

 

https://www.meade.co...k-ota-only.html

 


Edited by Nicole Sharp, 24 November 2021 - 06:32 PM.


#2 dcaponeii

dcaponeii

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Posted 25 November 2021 - 09:47 AM

Any idea if an Optec Lepus 0.62X reducer will work with a 1900/127 Maksutov-Cassegrain telescope?

 

The Optec Lepus requires a 2-inch visual back, so a 1.25-inch to 2-inch adapter would need to be inserted between the 1.25-inch visual back and the 2-inch focal reducer.  Not sure how that would work with a Canon APS-C DSLR camera (44 mm flange distance and sensor height of 14.9 mm).  The image circle diameter for a 1900/127 MCT is presumably about 27 mm, so reducing by 0.5X might be too much as compared to 0.62X (for a 14.9-mm sensor size).

 

Any other suggestions for DSLR focal reduction with a 1900/127 MCT would be appreciated.  For a 1540/127 MCT, I figure the Lepus 0.62X reducer would work better on the Sky-Watcher Skymax 127 since it already has a 2-inch visual back (unlike the Orion Apex 127 or Celestron C127).

 

https://www.optecinc...lepus/index.htm

 

https://www.bresser....tical-Tube.html

 

https://www.meade.co...k-ota-only.html

The Lepus comes in a format with an SCT thread which threaded directly onto both my 10" Meade 2120 and my 12" Meade LX600.  Talk to them directly by phone (I didn't do that when I first ordered the 0.62x reducer and got the wrong type.  They replaced it ASAP and have had no problems since.  There are lots of variations that are not easily found on the website.




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