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PSA - Baader BVs + AP convertible barlow

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#1 TG

TG

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Posted 29 November 2023 - 03:40 AM

I recently realized that I could unscrew the lens of the AP convertible 2x barlow and use it as  the nosepiece of the 1.25" Baader prism diagonal, attached to their Mark V or Maxbright II BVs. In either case, it produced image scale greater than the 1.7x GPC and focus was easily achieved without any other GPCs.

 

Putting this out here so it's useful for other people.

 

TG

 



#2 noisejammer

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Posted 30 November 2023 - 08:14 AM

Yep .. I've been doing that a long time. It also works well if you screw the optic into a 2"-T2 nosepiece.

 

If you are winding up the power, you may still want to use the 1.25x GPC to suppress spherochromatism from the binoviewer.



#3 Highburymark

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Posted 30 November 2023 - 08:26 AM

It works surprisingly well in combination with GPCs too. I use 25mm Leica microscope eyepieces for high magnification white light solar, and often employ the following chain:
120mm refractor - Baader Herschel wedge - AP Barcon - Baader T2 spacers to vary power - 1.7x GPC - Baader or Zeiss binoviewer - eyepieces.
On good days, it’s possible to resolve amazing detail around Sunspots at 200x with this set up.


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