Question regarding solar filter

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John Donne United States of America
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Question regarding solar filter

#1

Post by John Donne »


I have this filter and would like to know how long I can view safely.

Viewed a nice spot on the upper right edge of the sun just now.

Thoughts on this filter. It is mounted on an SE8.
Resized_20210918_154503.jpeg
Thank you
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SCOPES :ES127 f7.5, SW100 f9 Evostar, ES80 F6, LXD75 8" f10 SCT, 2120 10" f10 SCT, ES152 f6.5.
MOUNTS: SW AZ/EQ5, MEADE LXD75, CELESTRON CG4, Farpoint Parallelogram.
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Lowjiber
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Re: Question regarding solar filter

#2

Post by Lowjiber »


That's a Spectrum Telescope white-light filter. They make good stuff.

Just make sure you don't get any scratches on the surface... A little care goes a long way. Should last a long time.

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John Donne United States of America
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Re: Question regarding solar filter

#3

Post by John Donne »


Thank you John.
SCOPES :ES127 f7.5, SW100 f9 Evostar, ES80 F6, LXD75 8" f10 SCT, 2120 10" f10 SCT, ES152 f6.5.
MOUNTS: SW AZ/EQ5, MEADE LXD75, CELESTRON CG4, Farpoint Parallelogram.
BINOCULARS: CL 10X30, Pentax 8X43, 25X100 Oberwerks.
EP: Many.

"I am more than a sum of molecules.
I am more than a sum of memories or events.
I do not one day suddenly cease to be.
I am, before memory.
I am, before event.
I am"
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Lady Fraktor Slovakia
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Re: Question regarding solar filter

#4

Post by Lady Fraktor »


A nice filter!
Before using always look through it towards the sun to see if there are any pinholes in the surface. If you find any cover them with a black Sharpie will work but I prefer to use black nail polish. Just enough to cover the pinhole is enough.
You should be fine for viewing long term but you can check by placing your hand on the tube. If it is getting hot take a break but remember to not leave the telescope pointed towards the sun.
If you find the view is to bright even with using a polarizer you can make a aperture mask to block off some of the filter area.
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John Donne United States of America
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Re: Question regarding solar filter

#5

Post by John Donne »


Lady Fraktor wrote: Sun Sep 19, 2021 5:38 am A nice filter!
Before using always look through it towards the sun to see if there are any pinholes in the surface. If you find any cover them with a black Sharpie will work but I prefer to use black nail polish. Just enough to cover the pinhole is enough.
You should be fine for viewing long term but you can check by placing your hand on the tube. If it is getting hot take a break but remember to not leave the telescope pointed towards the sun.
If you find the view is to bright even with using a polarizer you can make a aperture mask to block off some of the filter area.
Thank you Gabrielle. I was wondering if that would serve to test the filter.
Have done and all is well. I will take care of this piece of kit.

I think I will do a mask.

Would cleaning be the same as I would do for my Objective or an EP?
Thank you.
SCOPES :ES127 f7.5, SW100 f9 Evostar, ES80 F6, LXD75 8" f10 SCT, 2120 10" f10 SCT, ES152 f6.5.
MOUNTS: SW AZ/EQ5, MEADE LXD75, CELESTRON CG4, Farpoint Parallelogram.
BINOCULARS: CL 10X30, Pentax 8X43, 25X100 Oberwerks.
EP: Many.

"I am more than a sum of molecules.
I am more than a sum of memories or events.
I do not one day suddenly cease to be.
I am, before memory.
I am, before event.
I am"
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Thefatkitty Canada
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Re: Question regarding solar filter

#6

Post by Thefatkitty »


Hey Mark, welcome to the wonderful world of Solar! :D

As for care of your filter; this should help: glass solar filter instruction sheet.

For storage, I have mine in a tupperware container. Been good for 5+ years now...

All the best,
Mark

"The Hankmeister" Celestron 8SE, orange tube Vixen made C80, CG4 & AZ-EQ5 mounts.
Too much Towa glass/mirrors.

H/A - PST stage 2 mod with a Baader 90mm ERF on a Celestron XLT 102 (thanks Mike!)
Ca-K - W/O 61mm, Antares 1.6 barlow, Baader 3.8 OD and Ca-K filters with a ZWO ASI174mm.
W/L - C80-HD with Baader 5.0 & 3.8 Solar film, Solar Continuum 7.5nm and UV/IR filters with a Canon EOS 550D.

Oh yeah, and Solar Cycle 25 :D
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