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Model: askar103_apo_flatPart Number: ASKFL10310
This is a 1.0x Field Flattener designed for the Askar 103APO Telescope.
Includes built in filter thread and M54/M48 Adapters
I'm pretty happy with my askar 103 and i already own the 0.8x reducer.I decided to go for this flattener to be able to exploit the full 700mm, that is not much, but is all I have at the moment.I was able to test it already under the stars and it definitely does its job incredibly well. The stars are good till the corners of my APS-C IMX-571 and i'm super happy.I passed to ASTAP some raws to see how flat it was and i got a off-axi aberration of HFD=0.04 (with tilt 0.30 7%), that, i'm not an expert, but looks very good to me.
I bought the 1.0 Askar flattener to complete the set of 3 I now have. Used for first time on the Crescent Nebula the other night and even with only a couple of hours of lights the results are fine even in the corners but with a ASI 533 camera I would not expect anything else.