StellaMira 2'' Adjustable Field Flattener with M48 Adapter
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StellaMira 2'' Adjustable Field Flattener with M48 AdapterStellaMira 2'' Adjustable Field Flattener with M48 AdapterStellaMira 2'' Adjustable Field Flattener with M48 Adapter

StellaMira 2" Adjustable Field Flattener with M48 Adapter

£99.00✓ 2 year warranty

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47x in stock shipped 1-2 working days

About this product

Model:  stellamira_adj_2inch_1x_ff_m48
Part Number:  K1.0Z-BU05

This useful non-reducing Adjustable Field Flattener enables DSLR astrophotography with most f/5-f/7 refractor telescopes. 

Optimised for DSLR cameras and telescopes with f/5-f/7 focal-ratios. Also reported to work well with RC scopes.

Can be used with telescope focal lengths narrowly outside this optimised f/range if using an astronomy camera with a smaller sensor. 

M48 threaded with an adjustable back focus from 55-80mm.

Fully multi-coated optics fitted into a CNC machined body with gloss black anodised finish. 

With this adjustable field flattener it is very easy to change back focus distance then lock it in place. Through experimentation, you can find the best back focus for your particular scope then tweak it to achieve optimum field flatness across the entire image. A fine 0.5mm scale makes accurate positioning easy. 

The recommended adjustment depends on the focal length of your telescope. This table is a good starting point for DSLR cameras that have a 55mm back focus:

Focal Length Adjustment
>1000mm 55mm
800-1000mm 58mm
600-800mm 60mm
480-600mm 65mm
400-480mm 70mm

 

FEATURES

  • No change to telescope focal length.
  • 44mm imaging circle.
  • Suitable for focal ratios around f/5 - f/7.
  • High quality, fully multi-coated optics.
  • Integrated M48 thread for connecting to a camera.
  • CNC machined body with hard, gloss, black anodised finish.
  • 2" push-fit nosepiece for can be removed to reveal a female M48 thread for direct screw-on attachment.
  • The 2" nosepiece is tapered for safety and accepts 2" astronomy filters.
  • Adjustable 55-80mm back focus

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