Switch on the Light at RZ CAS (and VdB 7, VdB 9) in Cassiopeia (pete_xl)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: LBN 643 · LDN 1355 · LDN 1357 · LDN 1358 · RZ Cas · SU Cas

Switch on the Light at RZ CAS (and VdB 7, VdB 9) in Cassiopeia

The image shows the region around the stars RZ CAS and SU CAS in the constellation Cassiopeia. I intended to highlight the dark nebulae and filaments in that area and reveal as much as possible of the reflexion nebulae VdB 7 and VdB 9. There are also some dark nebulae in the frame (i.e. LDN 1355, 1357, 1358, see anntotated version D). Together they form a dark nebula composition that is sometimes calle "The Helping Hand" which is of course upside down in my image. The other bright star in the field SU CAS is a Cepheid star.

Shooting into this region was proposed by a friend whose focus was more on the variable star RZ CAS. RZ CAS is an eclipsing star with a period of 1.2 days. Image revision C is a fast-foreward gif-animation of the brightness variation I could capture in my Lum light frames.

I loaded the normalized frames into MuniWin and let it calculate the brightness variation curve of RZ CAS for that eclipse (see revision D). So this project was also my first attempt of a photometric astro work. The calculated curve has two gaps. The first one was caused by the meridian flip procedure that fell into the time of the eclipse. The second gap was caused by clouds. In the literature I found a maximum variation of 1.5 mag while mine is much less. This may be caused by the fact that in RZ CAS is quite saturated in my 60 s exposures which might have compromised the measurements.

Final
Original
C
D
E

C

Description: Brightness Variation of RZ CAs

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D

Description: Brighness Variation of RZ Cas (photometric)

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E

Description: Annotated Version

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Status	Advanced success
Started	...
Astrometry.net job	5188587
PixInsight job	SIFJ5NFKUE579AA7T8OYW37PRRA2HXXZ
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h52m16s.87
RA (top/left)	02h46m08s.44
RA (top/right)	02h46m28s.80
RA (bottom/right)	02h57m57s.35
RA (bottom/left)	02h58m32s.74

Dec (center)	+69°14′36″.1
Dec (top/left)	+70°05′05″.8
Dec (top/right)	+68°23′40″.1
Dec (bottom/right)	+68°23′18″.5
Dec (bottom/left)	+70°04′42″.5

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Switch on the Light at RZ CAS (and VdB 7, VdB 9) in Cassiopeia

Switch on the Light at RZ CAS (and VdB 7, VdB 9) in Cassiopeia

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Switch on the Light at RZ CAS (and VdB 7, VdB 9) in Cassiopeia

Switch on the Light at RZ CAS (and VdB 7, VdB 9) in Cassiopeia

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