--955695605-143302914-955695605=:8583
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Hello,

Does=20anybody=20know=20the=20dimension=20(in=20arcmin=20or=20arcsec)=20of=20the=20
inner=20circle=20and=20the=20inner=20=20square=20of=20the=20meade=20reticule=20
eyepiece=204000=20plossl=209=20mm=20in=20combination=20with=20a=208''=20f/d=3D10=20or=20
f/d=3D6.3=20(with=20the=20focal=20reducer)=3F
This=20information=20could=20tell=20me=20how=20many=20drift=20can=20I=20accept=20
when=20guiding=20long=20exposure=20photography.
I=20posted=20a=20message=202=20months=20ago=20to=20tell=20that=20I=20had=20a=20reticule=20
reflexion=20on=20my=20first=20deep=20sky=20picture=20(the=20red=20reticule=20
cross=20is=20visible=20on=20the=20bottom=20of=20the=20picture).
I=20modified=20my=20off=20axis=20guider=20(I=20sticked=20some=20black=20paper=20on=20
one=20side=20of=20the=20prism=20to=20avoid=20reflexions)=20and=20for=20the=20next=20
pictures=20I=20took=20I=20tried=20to=20use=20less=20power=20when=20illuminating=20
the=20cross,=20but=20I=20still=20have=20the=20reticule=20image=20on=20my=20
pictures,=20less=20than=20first=20time,=20but=20still=20there.
I=20wonder=20if=20this=20is=20not=20a=20reflexion=20of=20my=20reticule=20on=20the=20
corrector=20plate=20=20which=20goes=20on=20the=20opposite=20way=20than=20the=20
light=20from=20stars=20and=20comes=20on=20my=20picture.

Roland.=0A--=0AL'internet=20gratuit=20avec=20LibertySurf=20=20=0Ahttp://www.libertysurf.fr=0A
--955695605-143302914-955695605=:8583--

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