same setup 12/26

justapictureposter
what meaning does those numbers really have?
is it absolute or just relative to what ever scope its in

yes it does(did)

thx for info
mine was getting hard to rotate
thx to info presented here
i fixed it
like new

interesting
i have one

530 2A

edmund 3 inch F15

i did not realize earth based chronograph have gotten that good!

THIS IS REAL INTERESTING
i built an SPV i wonder if it could be modified for this
this was my spv prom shot
i never thought it could be used or any version be used for corona

link to thousand oaks model
i dont think they sell them anymore
http://www.thousandoaksoptical.com/wp-c ... ctions.pdf

method 1 (Hau) h alpha unit using skybender tilt device

here is pic I took with spv and 1nm Ha filter
that black disk is not done by software but actual occulting disk

link to David G SPV
http://www.considine.net/dgroski/promscope/

5nm to much you need 1nm filter for proms you can get them from Andover optical i have done that 2 ways method one is the "thousand oaks" method where filter is placed in a tilt-tune holder and in a scope running at min f25 plus front ERF method two is making an SPV(solar prom viewer) David Groski h...

pretty prom

sunspot

he looks serious

pretty

last night 3X barlow

one cool thing you can project on sphere
for 3d correction

the view from focal point on my property
its far! (the tripod)

lets us not forget the simple things
it a long focal length simplex lens (80 feet fl!)
like days of old with one exception of adding a modern mirror
so to make it easy usable image on board 250mm wide

i usually have trouble doing single shot color
these came out ok by my previous standards
asi120mc camera 1100 frames
celestron 925

white light criterion S4 filter

baader kline
omega caK

qrk ha Mg