First light high res 1 angstrom blocking

[Kitsunegari]

have fun

ds a1 raw.tif

 

Edited June 14, 2020 by Kitsunegari

[Kitsunegari]

[Kitsunegari]

here is a shot of the swwet spot on my pst etalon when used in "Standard pstmod" arrangement.

 

i dont like hiding imperfections,    Pst mod arrangements are far from perfect!

 

[Kitsunegari]

and another one before im off to work.

 

These are all stacked with auto stakkert.    So they have a few formation errors, but you get the idea here.    

 

I am very happy with this 1 angstrom blocking filter.!

 

[Kitsunegari]

[Macavity]

Nice rendering of the "spicule" layer. What is the Filter you are using?
My Nerd senses didn't manage to spot the name in the pictures etc. 😛

[Kitsunegari]

31 minutes ago, Macavity said:

Nice rendering of the "spicule" layer. What is the Filter you are using?
My Nerd senses didn't manage to spot the name in the pictures etc. 😛

This is a coronado pst etalon, utilizing a new product supplied by Apollo Lasky.  The filter in question is a 1 angstrom blocking filter.  Typical blocking filters are 8 angstroms and the difference is visible on the limb of the sun.

 

I made a cool comparison of the dramatic "limb elimination" affect this has, 

 

 Notice the well defined secondary circle on the limb in the coronado filter image:    This nearly nonexistant in the 1 angstrom filter.

 

The resulting reduction in bandwidth has a massive impact on the solar appearance, and makes it look rather cotton like. 

This is a well known phenomena while utilizing a double stacked etalon,  however this is the first time  this presentation is confirmed by blocking filter upgrades.

[Pete Presland]

Some really nice detail visible there.