LDN 1235 (Dark Shark Nebula)
From time to time I obtain data sets from remote observatories. One of my favorite providers is Telescope Live with telescopes in e.g. Chile, Australia and Spain. One of the data sets I received, was data from the dark nebula LDN 1235 located in the constellation Cepheus.
The images were taken with the following equipment (CHI-1 CCD and CMOS, Telescope Live):
| Location | IC Observatory, Spain | IC Observatory, Spain |
| Telescope | Takahashi FSQ-106ED | Takahashi FSQ-106ED |
| Focal length [mm] | 390 | 390 |
| Focal ratio | 3.6 | 3.6 |
| Mount | Paramount MX+ | Paramount MX+ |
| Camera | FLI Proline 16803 | QHY 600M Pro |
| Filter | L:R:G:B | L:R:G:B |
| Exposure time [min] | 100:120:110:120 | 30:30:30:15 |
| Resolution | 4,75″/px | 2.02″/px |
Data calibration and registration and the final processing was done with PixInsight. The result was as follows:
LDN 1235 annotated
In the field were quiet a lot of quasars. The two most distant of them (see annotation) are:
WISEA J220939.23+742859.4 with a redshift of 2.5
WISEA J222546.40+744003.0 with a redshift of 2.5
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