![M33 astrophotography: William Optics GT 71, ASI 294 with Star Adventurer EQ Mount M33 astrophotography: William Optics GT 71, ASI 294 with Star Adventurer EQ Mount](http://www.octanslab.com/wp-content/uploads/2018/09/M33-William-Optics-GT-71-and-Star-Adventurer.jpg)
M33 astrophotography: William Optics GT 71 APO, ASI 294 camera & Star Adventurer EQ mount
- Telescope: William Optics GT 71 with 0.8 6A2 Field Flattener
- Camera: ASI 294 MC Pro (-10 Degrees, gain 450)
- Mount: Star Adventurer
- Alignment: PoleMaster
- Guiding: PHD2
- Image: 25 * 90 second subs
- Calibration: AstroPixel Processor (darks, flats and dark flats)
- Bortle Class 7 site
View the high resolution M33.
You can learn more about the imaging setup including Star adventurer & PHD2 guiding.
The magic of flats in astrophotography
The following images are single 90 second exposures before and after debayering respectively. The moral of the story is clean the camera sensor before each imaging session.
![M33 single 90 second exposure before debayer M33 single 90 second exposure before debayer](http://www.octanslab.com/wp-content/uploads/2018/09/single-60-sec-exposure-before-debay-with-dust-mote.jpg)
![M33 single 90 second exposure after debayer in Fitswork M33 single 90 second exposure after debayer in Fitswork](http://www.octanslab.com/wp-content/uploads/2018/09/M33-debayered-un-Fitswork-using-GRRB-algorithm.jpg)
The master flat used to remove the dust and vignetting in the optical path.
![master flat used to remove vignetting and dust on the sensor master flat used to remove vignetting and dust on the sensor](http://www.octanslab.com/wp-content/uploads/2018/09/Masterflat.jpg)
Recent Images
![NGC2903 astrophotography with RASA8 and ASI183MC](http://www.octanslab.com/wp-content/uploads/2021/04/NGC2903-RASA8.jpg)
![The Borg55FL captures NGC 2264 in hydrogen alpha](http://www.octanslab.com/wp-content/uploads/2020/12/NGC2264-in-hydrogen-alpha-with-Borg55FL-510x382.jpg)
![Astrophotography of the California Nebula in HA using the Borg55FL](http://www.octanslab.com/wp-content/uploads/2020/12/California-Nebula-in-hydrogen-alpha-using-the-Borg55fl-web-510x382.jpg)
![The Borg55FL captures NGC2174 & IC443 in hydrogen alpha](http://www.octanslab.com/wp-content/uploads/2020/12/The-Borg55FL-captures-NGC2174-IC443-in-hydrogen-alpha-510x382.jpg)
![The Flaming Star Nebula in hydrogen alpha with the Borg55FL](http://www.octanslab.com/wp-content/uploads/2020/12/The-Flaming-Star-Nebula-in-hydrogen-alpha-with-Borg55FL-510x382.jpg)
![Rosette Nebula captured with RASA8 & ASI183MC camera](http://www.octanslab.com/wp-content/uploads/2020/12/Rosette-nebula-captured-with-RASA8-and-ASI183MC-camera-510x382.jpg)
![M33 galaxy captured with RASA8 & ASI183MC camera](http://www.octanslab.com/wp-content/uploads/2020/12/M33-galaxy-with-RASA8-and-ASI183MC-camera-510x382.jpg)
![Astrophotography of the Rosette Nebula in HA using the Borg55FL](http://www.octanslab.com/wp-content/uploads/2020/10/Astrophotography-of-The-Rosette-Nebula-using-a-Borg55FL-510x382.jpg)
![M27 captured with William Optics GTF102 & ASI183MM Pro camera](http://www.octanslab.com/wp-content/uploads/2020/09/M27-HOO-with-William-Optics-GTF102mm-telescope-and-ASI138MM-camera-510x382.jpg)
![Veil Nebula captured with William Optics GT71 & ASI183MM Pro camera](http://www.octanslab.com/wp-content/uploads/2020/09/Eastern_Veil-sm-510x382.jpg)
![Carina Nebula captured with William Optics GT71 & ASI183MM Pro camera](http://www.octanslab.com/wp-content/uploads/2020/07/Carina-Nebula-Narrowband-imaging-510x382.jpg)
![NGC 5128 captured with RASA8 & ASI294MC Pro](http://www.octanslab.com/wp-content/uploads/2020/06/NGC5128-captured-with-RASA8-and-ASI294Mc-Pro.jpg-510x382.jpg)
![M83 captured with RASA8 & ASI294MC Pro](http://www.octanslab.com/wp-content/uploads/2020/06/M83-captured-with-RASA8-and-ASI294MC-Pro-510x382.jpg)
![Messier 31 Andromeda Galaxy, William Optics GT71 & ASI294MC Pro](http://www.octanslab.com/wp-content/uploads/2020/06/Andromeda-Galaxy-feature-image.jpg)
![Sadr region Cygnus, RASA8 & ASI294MC Pro](http://www.octanslab.com/wp-content/uploads/2020/05/Sadr-region-Cygnus-RASA8-ASI294MC-Pro-feature.jpg)
![Messier 57 The Ring Nebula, RASA8 & ASI294MC Pro](http://www.octanslab.com/wp-content/uploads/2020/05/M57-photographed-using-a-RASA8-telescope-feature-image.jpg)
![Running Chicken Nebula IC2944, William Optics GT71 & ASI294MC Pro](http://www.octanslab.com/wp-content/uploads/2020/05/Gabriela-Mistral-feature-image.jpg)
![Tarantula nebula astrophotography with RASA8 & ASI 294MC Pro](http://www.octanslab.com/wp-content/uploads/2020/05/RASA-8-images-Tarantula-nebula-feature-image.jpg)
![Moon with WO GTF 102 and ASI294 MC Pro](http://www.octanslab.com/wp-content/uploads/2020/05/Moon-with-WO-GTF-102-and-ASI294-MC-Pro-feature-image.jpg)
![Widefield astrophotography of Orion using the ZWO ASI 294 MCPRO](http://www.octanslab.com/wp-content/uploads/2019/09/Orion-widefield-ZSO-ASI294-MCPRO-Olympus-50mm-Arkarula-feature-image.jpg)
![Tarantula nebula astrophotography with William Optics GT71 & ASI 294MCPRO](http://www.octanslab.com/wp-content/uploads/2019/08/Tarantula-Nebula-astrophotography-with-William-Optics-GT71-ASI-294MCPRO-feature-image.jpg)
![M33 astrophotography ASI 294 camera and Star Adventurer EQ Mount](http://www.octanslab.com/wp-content/uploads/2018/09/M33-William-Optics-GT-71-and-Star-Adventurer-front.jpg)
![Veil Nebula astrophotography ASI 294 with Star Adventurer EQ Mount](http://www.octanslab.com/wp-content/uploads/2018/09/Veil-Nebula-WO-GT-71-and-Star-Adventurer-front.jpg)
![Lunar photography OMD EM5 mark 2 high resolution mode](http://www.octanslab.com/wp-content/uploads/2018/09/lunar-photography-omd-em5-high-resolution-mode-front.jpg)
![Sculpture Galaxy with William Optics GT 102 and ASI 294 astrophotography camera](http://www.octanslab.com/wp-content/uploads/2018/09/Sculpture-NGC-253-William-Optics-GT-102-APO-and-ASI-294-astrophotography-camera-front.jpg)
![Eta Carinae Astrophotography Olympus OMD EM5 & Star Adventurer](http://www.octanslab.com/wp-content/uploads/2018/07/Astrophotography-Olympus-OMD-EM5-Star-Adventurer-front-page.jpg)
![Wiliam Optics GT102 OMD EM5 mark 2 high res moon astrophotography](http://www.octanslab.com/wp-content/uploads/2018/07/OMD-EM5-mark-2-high-res-moon-astrophotography-front.jpg)
![Leo Trio astrophotography William Optics GT71 & ASI 294 MC Pro](http://www.octanslab.com/wp-content/uploads/2018/07/Leo-Trio-William-Optics-GT71-front-page.jpg)
![Fusion360 3d printed astrophotography extension tube omd em5](http://www.octanslab.com/wp-content/uploads/2018/07/GT71-equipment-configurations-star-adventurer-front.jpg)
![William Optics GT71 imaging configurations](http://www.octanslab.com/wp-content/uploads/2018/07/GT71-equipment-configurations-front-page.jpg)