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STC optical multispectra filter

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#1 suvowner

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Posted 13 June 2018 - 12:19 PM

anyone tried or have thoughts how well this filter would work for eaa or even regular nebulae imaging with a osc camera ??

 

would this be good enough to get close to narrow band imaging without having to get new mono camera and narrowband filters ??

 

https://stcoptics.com/en/astro/

 

https://www.cyclopso...spectra-filter/

 

 

STC Astro Multispectra filter is a general-purpose light pollution suppression filter designed to use with DSLRs cameras. It will effectively reduce the interference from artificial lighting, such as mercury and sodium street light, yet allow the important nebula emission lines to pass, thus enhancing the contrast of astronomical objects. Supporting by Dr. Wei-Hao Wang, it is improved to passing more than 95% of the light from the main spectral lines from emission nebula, such as the predominant Hydrogen-Alpha line at 656.3nm, the Oxygen III line at 495.9 & 500.7nm, and the Hydrogen-Beta line at 486.1nm. It is coated by the use of the IBAD (Ion beam-assisted deposition) technology on SchottĀ® B270 optical glass, working for higher durability and easily cleaning. Since light pollution and airglow are filtered out with ASTRO filter, much more of the interesting wavelengths of the deep-sky object will be recorded in these longer exposures.

 

 

 

 

https://www.youtube....h?v=iI0z2i7wfj0  (around 4:30 he gets to the stc optical booth)


Edited by suvowner, 13 June 2018 - 02:19 PM.


#2 nic35

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Posted 13 June 2018 - 01:57 PM

It is definitely not a narrow band filter - or anything close.  Its a general purpose Light Pollution filter - with reduced transmissivity in the IR beyond about 700nm compared to say a Astronomik CLS (non CCD).

 

I'm not at all sure how good it is.  I recommend starting into filters with this topic:  https://www.cloudyni...-2?hl= optolong

 

It leads to many useful resources.

 

john   



#3 suvowner

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Posted 13 June 2018 - 02:44 PM

Idas light pollution filter on the top and the stc on the bottom, they look pretty close to me. I have an LPS-D1, so it looks to me as if the Lps-D2 and the multi-spectra are very close, The only thing to gain over the lps D1 might be SII ??

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Edited by suvowner, 13 June 2018 - 02:45 PM.


#4 ccs_hello

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Posted 13 June 2018 - 05:29 PM

IMHO, there is not too much a point for nick picking.

If need to purchase today, I'd go for a reasonable priced LPR which has the right thread size for your needs.

 

The reason is that, more and more LED based lighting are being deployed to replace the classic, power-hungry street lights.

AFAIK, LED lights are broadband and LPR filter to such illumination will no longer be effective.  Call it the progress.


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#5 suvowner

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Posted 13 June 2018 - 05:49 PM

IMHO, there is not too much a point for nick picking.

If need to purchase today, I'd go for a reasonable priced LPR which has the right thread size for your needs.

 

The reason is that, more and more LED based lighting are being deployed to replace the classic, power-hungry street lights.

AFAIK, LED lights are broadband and LPR filter to such illumination will no longer be effective.  Call it the progress.

i dont have any significant led in my area for now, but i think idas has a new p2 filter that does block led pollution



#6 ccs_hello

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Posted 13 June 2018 - 06:56 PM

Some idas LPS discussions

https://www.cloudyni...s-d1-vs-lps-p2/




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