ScienceDownEast | ScienceDownEast Astrophotography | Nebulae | NGC 2175 Monkey Head Nebula | NGC 2175 Monkey Head Nebula 2023-09-16
A reworking of the image using new PixInsight tools. In this rendering I've used the SpectrophotometricColorCalibration process to colour correct the image based on a transmission curve I've created for the Triad Quad Ultra Filter to represent my sensor/filter combination. Note that in the end I did tweak the colour somewhat using CurvesTransforation.
NGC 2175 (also known as the Monkey Head Nebula) is an H II emission nebula located in the constellation Orion and is associated with the open star cluster NGC 2175 which is also shown in this image. It is thought to be located about 6,400 light-years away from Earth. The visual magnitude is 7.59.
Note: click on the image to view it at the full resolution of the uploaded image, then click again for actual size.
| Exposure | 55@1200 sec (18.33 hours) | ||||||||||
| ISO | 3200 | ||||||||||
| Camera | Nikon Z7 [8856 x 5504] | ||||||||||
| Optics | Skywatcher Esprit 120mm Refractor, 840 mm focal length | ||||||||||
| Filter | Radian Triad Ultra Quad-Band Narrowband Filter | ||||||||||
| Guiding | Phd2 using a ZWO 224MC on an Orion 60x240mm Guide scope | ||||||||||
| Controller | Images taken using Kstars on an Odroid-N2 (Raspberry Pi clone) | ||||||||||
| Location | Lower Sackville, Nova Scotia. | ||||||||||
| Date | 2022-03-27 and earlier sessions | ||||||||||
| PixInsight Processing |
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