Solar ERF for LUNAR imaging? :D

Use this section to discuss "standard" Baader/Coronado/ Lunt SolarView/ Daystar, etc… filters, cameras and scopes. No mods, just questions/ answers and reviews.
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Macavity
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Solar ERF for LUNAR imaging? :D

Post by Macavity » Wed Apr 25, 2018 12:07 pm

Just as an off-beat idea, I wondered if anyone had tried using a solar ERF Filter
for Lunar Imaging? I suspect some here may be secret Lunar Imagers as well? ;)

In THEORY, it should work? The Baader ones are supposedly "optically flat" etc.
Of course, there is the (usual) "tilt thing" to ponder, but may I give it a go... :D

Have to think of some justification for my "extra" ED80 (for my Frankenscope)!

P.S. Why DO the Lunar types use RED filters particularly?
I suppose "seeing" dominates wavelength + resolution? :cool:

*** As ever, don't try SOLAR imaging/viewing without requisite Solar filter! ***

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marktownley
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Re: Solar ERF for LUNAR imaging? :D

Post by marktownley » Wed Apr 25, 2018 7:50 pm

yes it works
Image
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!

christian viladrich
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Re: Solar ERF for LUNAR imaging? :D

Post by christian viladrich » Thu Apr 26, 2018 8:51 pm

Hi,
A red filter is very often used on large scopes for lunar (and planetary) imaging since the seeing improves when the wavelength increases (= better seeing in red light compared to blue light).
Some examples here with the C14 :
http://astrosurf.com/viladrich/astro/mo ... oseup.html

This beeing said, it is more straigtforward to use a 1"1/4 red filter than a full aperture ERF ;-)
Christian Viladrich
Co-author of "Astronomie Planétaire"
http://www.astroplanetes.com/

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rsfoto
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Re: Solar ERF for LUNAR imaging? :D

Post by rsfoto » Fri Apr 27, 2018 11:33 pm

christian viladrich wrote:
Thu Apr 26, 2018 8:51 pm
Hi,
A red filter is very often used on large scopes for lunar (and planetary) imaging since the seeing improves when the wavelength increases (= better seeing in red light compared to blue light).
Some examples here with the C14 :
http://astrosurf.com/viladrich/astro/mo ... oseup.html

This beeing said, it is more straigtforward to use a 1"1/4 red filter than a full aperture ERF ;-)
Hi Christian,

Astonishing Sun light reflections on Lunar surface :shock:
regards Rainer

Observatorio Real de 14 San Luis Potosi Mexico

Macavity
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Re: Solar ERF for LUNAR imaging? :D

Post by Macavity » Sun Apr 29, 2018 11:15 am

Thanks Folks! Indeed, some splendid images there, Christian! :)

Along with testing the ERF (and the rest of the Frankenscope system)
I will probably settle for a Baader IR-Cut as a "gentler" introduction...
While I establish relative sensitivity of my cameras for Lunar IR. :D

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