Image Description and Details : While waiting for the galaxy season to pass, I tried my hand at growing roses with this nebula.
I took the opportunity to exceed my exposure time record with more than 100 hours on this target. There are about 70h of HaOIII dualband filter and 30h of RGB.

The image processing was really difficult. I would like to have more details in Ha but I'll settle for this version which I like all the same.

Sh2-174 is an unusual ancient planetary nebula. A planetary nebula is created when a low-mass star blows off its outer layers at the end of its life. The core of the star remains and is called a white dwarf. Usually the white dwarf can be found very near the center of the planetary nebula. But in the case of Sh2-174 it off to the left. (It is the blue star near the center of the blue gas). This asymmetry is due to the planetary nebula's interaction with the interstellar medium that surrounds it.

🔭: ASA Newton 254/950 F3.6
⚙️: Paramount MyT
📷: ZWO ASI2400MC à -10°C + rotateur Artesky
🕶: IDAS LPS-P3
🎯: Skywatcher Evostar72ED + ASI290MM mini
💻: TheSkyX pro, NINA, PHD2, AstroPixel Processor, PixInsight, Photoshop
⏱: 105h25′ (205 x 600” and 285 x 900")
🌍: Lorraine, France
📆: Over 14 nights : March-April 2022

Copyright: Thomas LELU

Sh2- 174 Planetary Nebula in the cepheo, also known as "Valentine's rose". filming started in April 2018 and finished in October 2019.
Location: San Romualdo - Ravenna
Tecnosky There 130/900
Asa Ddm60pro - Non-guided poses
CCD CCD 520 WSI Cooled-15
RGB the I-SERIES AND NARROWBAND 5 NM
HA-OIII-RGB: H-alpha 43 x10min, OIII 29 x10min, R 26 x5min, G 27 x5min, B 30 x5min
Acquisition: Maximdl5 - calibrated with dark, bias and flat.
Processing: Maximdl5, Astroart6, Paint Shop Pro2020, Plugin Topaz and starspikepro3.