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Equipment Discussions >> Binoviewers

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super member

Reged: 08/08/11

How to get a equivalent Delos 22 on Binoviewing new
      #5660308 - 02/03/13 04:31 PM

I'm one of those that need to use eyeglasses and don't find the Panoptic 24 usable due to the reduced eye-relief.
I'm hoping that one day there will be a Delos 22 using all field stop possible for 1.25" format but meanwhile I found a solution that might interest those using 1.7x or higher correctors.
On my daylight bino combo I use a Nikon FSA-L2 as an erector/zoom that result in a 1.7x factor increase with the Mark V, reducing the TFOV possible to obtain. Having a Delos 17.3mm since a few weeks I tested it with this combo but the resulting magnifications are too high, so too reduced fields for my needs. Remembered to test it using the BS 1.25" 0.5x reducer attached to the eyepiece and the image quality still is good and the TFOV results as using a Delos 22mm that still doesn't exist! The light/contrast is most probably reduced when compared to a Pano 24, it needs 10mm infocus but might be interesting for those that already have a pair of Delos 17.3 - these reducers aren't expensive.
Also interesting is that I didn't gain significant FOV when using the reducer on the Meade 5000 26/60 because it vignetted but the larger FOV I obtained was using the reducer with a Nikon HW 12.5mm. Don't know why but, with this ep, the obtained field resulted 14% larger than with the Meade ep and the Delos with reducer, as the Mark V had >30 mm of field stop...
By the way the Meade 26/60 should have 27mm fieldstop since is the larger I obtained with a 1.25" ep, similar to the Vixen NLV40mm and a bit larger than the Pano 24. The BS reducer seem a GSO clone.

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Carpal Tunnel

Reged: 03/28/11

Re: How to get a equivalent Delos 22 on Binoviewing [Re: DRodrigues]
      #5661548 - 02/04/13 11:12 AM

If you need to use glasses due to astigmatsm, why not use dioptrix instead of glasses? Assuming it is just you using the binoviewers.

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