Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  Bubble nebula  ·  M 52  ·  NGC 7538  ·  NGC 7635  ·  NGC 7654  ·  The star 4Cas
RASA Filter Testing, Jim McPherson
RASA Filter Testing
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RASA Filter Testing

RASA Filter Testing, Jim McPherson
RASA Filter Testing
Powered byPixInsight

RASA Filter Testing

Equipment

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Acquisition details

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Description

These images are single subs meant to show the effects of filter wavelength shift due to fast optics.

"Original" Image 1: Bubble Nebula with Astromania 12nm Ha filter on ASI1600mm-c 60 Seconds, Gain 76, Temp -18C

"B" Image 2: Bubble Nebula with Optolong L-eNhance filter on ASI1600mm-c (note that L-eNhance should pass both Ha and OIII). 60 Seconds, Gain 76, Temp -18C

"C" Image 3: Veil , with L-eNhance on ASI183MC red channel only 120s, Gain 53, Temp -15C

"D" Image 4: Veil, with Opt Triad on ASI183MC red channel only 120s, Gain 53, Temp -15C

All images have darks and flats applied. The ASI183MC (OSC) images were made using AutoSTF on the red channel extracted from the OSC image.

Comments

Revisions

  • RASA Filter Testing, Jim McPherson
    Original
  • RASA Filter Testing, Jim McPherson
    B
  • RASA Filter Testing, Jim McPherson
    C
  • RASA Filter Testing, Jim McPherson
    D
  • Final
    RASA Filter Testing, Jim McPherson
    E

B

Description: LeNhance version, same settings as Rev A except L-eNhance used.

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C

Description: Veil Ha (red) channel LeNhance ASI183MC

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D

Description: Veil Ha (red) with Triad (gen 1) ASI183MC

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E

Description: And just for fun, the integrated Ha from the ASI1600mm-c. This is far better than my much longer integrations with the L-eNhance and the ASI183MC . No processing, bad tilt, only stretched.

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Sky plot

Sky plot

Histogram

RASA Filter Testing, Jim McPherson

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