Just found this.
Didn't know I had one.
As New in box. Box marked £50, so maybe that is what it cost perhaps 2008?
Many uncoated surfaces.
Some single coats.
Marked 193m/1000m or 11.06 degrees.
It actually has a poorly marked serial number and GKA on tripod thread cover. With a picture of a tripod.
Mild pincushion distortion.
Reading from my Post It note stuck on the box.
720g.
Not heavy.
Approximately 5mm exit pupil.
8.5x42 Bresser SWA.
11 degree true field.
Magnification about 8x so simple 88 degree apparent.
Some magnification change across field.
Bigger than Nagler 11mm eyepiece.
Fisheye effect.
Maybe fisheye mirror with prisms
Sharp only over central 40% of field.
Different in different quadrants.
Distortion and badly out of focus edges.
Very bad for stars.
Flare.
Spherical aberration.
Left barrel astigmatic.
I can't vouch for any of this as I can't remember testing but might check.
Very little cut off from prisms centrally almost round.
Crazy hot again 32C again 90F, gone on for two months but thankfully promise of change Wednesday.
30C indoors air conditioner on.
Didn't know I had one.
As New in box. Box marked £50, so maybe that is what it cost perhaps 2008?
Many uncoated surfaces.
Some single coats.
Marked 193m/1000m or 11.06 degrees.
It actually has a poorly marked serial number and GKA on tripod thread cover. With a picture of a tripod.
Mild pincushion distortion.
Reading from my Post It note stuck on the box.
720g.
Not heavy.
Approximately 5mm exit pupil.
8.5x42 Bresser SWA.
11 degree true field.
Magnification about 8x so simple 88 degree apparent.
Some magnification change across field.
Bigger than Nagler 11mm eyepiece.
Fisheye effect.
Maybe fisheye mirror with prisms
Sharp only over central 40% of field.
Different in different quadrants.
Distortion and badly out of focus edges.
Very bad for stars.
Flare.
Spherical aberration.
Left barrel astigmatic.
I can't vouch for any of this as I can't remember testing but might check.
Very little cut off from prisms centrally almost round.
Crazy hot again 32C again 90F, gone on for two months but thankfully promise of change Wednesday.
30C indoors air conditioner on.
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