PST Solar 20th Feb. 2013

asimov (John) · #1 20-02-2013, 11:34 AM

Haven't seen the sun for days but this morning it was cloud free. This would be classified as a 'normal' shot I assume - No additional filters apart from what a stock PST uses. I have more data with various other filtering that I'll post later.

40mm PST/DMK21

asimov (John) · #2 20-02-2013, 01:06 PM

Reckon this one whips that first one into shape a tad.

Captured with the Astronomik 'L' filter onboard the camera to cut through the seeing.

Larryp (Laurie) · #3 20-02-2013, 01:24 PM

That looks excellent, John!

h0ughy (David) · #4 20-02-2013, 01:25 PM

nice proms and sunspots

Solar (Ralph Smith) · #5 20-02-2013, 04:44 PM

No John that is not normal. Outstanding is more the like for a PST.

I take it that is your first go at imaging with that setup?

UniPol · #6 20-02-2013, 04:56 PM

It is amazing what can be achieved with the PST not to mention the skill you have shown in extracting the best from it, well done.

Poita (Peter) · #7 20-02-2013, 05:04 PM

The filter certainly seems to make a difference. I'm surprised how much really. What are the specs on the filter?

asimov (John) · #8 20-02-2013, 05:31 PM

Thanks guys.

Ralph, this is '3rd light' for the setup but first go with the 'L' filter. Specs attached for Peter.

Solar (Ralph Smith) · #9 20-02-2013, 05:44 PM

Quote:

Originally Posted by asimov

Thanks guys.

Ralph, this is '3rd light' for the setup but first go with the 'L' filter. Specs attached for Peter.

Yeah John now I remember you posting a bottler a while back, That must have been first light.

Merlin66 (Ken) · #10 20-02-2013, 06:30 PM

With the PST in Ha there should be no benefit of using an additional filter...The Ha bandwidth through the final blocking filter is only 0.7A....
monochromatic light......

deadsimple (Ash) · #11 20-02-2013, 08:05 PM

Quote:

Originally Posted by Merlin66

With the PST in Ha there should be no benefit of using an additional filter...The Ha bandwidth through the final blocking filter is only 0.7A....
monochromatic light......

I too would like to know how a wideband filter behind an (ideally) narrowband optical system can achieve anything.

Does the PST have significant unwanted passbands or something?

asimov (John) · #12 20-02-2013, 09:12 PM

Well perhaps I just had a better run seeing wise then..

I kept processing the same as in the first image.

It's a bit like splitting the channels (RGB) of monochromatic light, taken with a mono camera - Technically it can't be done..