The Flickr Vdb93 Image Generatr

Hydrogen-alpha emissions were rich in the area. Oblique straight fine dark filaments looked to be connecting two faint hydrogen-alpha emission areas near the center of the frame.

Here is a frame taken without dual narrowband filter:
www.flickr.com/photos/hiroc/54457179419

Equipment: Sigma 28mmF1.4 "Art," Dual Narrowband Filter IDAS NB12 or Clear Filter, and EOS R6-SP5, modified by Seo San on ZWO AM5 Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 120MM-mini, and PHD2 Guiding

Exposure: 6 times x 1,800 seconds, 3 x 240 sec, and 5 x 60 seconds at ISO 6,400 and f/3.5 with Dual Narrowband Filter and 3 times 240 seconds and 19 times 60 seconds at ISO 1,600 and f/3.5 with Clear Filter

site: 2,434m above sea level at lat. 24 39 52 south and long. 70 16 11 west near Cerro Armazones in Sierra Vicuña Mackenna in Coast Range of Chile

Ambient temperature was 11 degrees Celsius or 52 degrees Fahrenheit. Wind was mild, and guide error RMS was 0.73". Sky was dark, and SQML was 21.78 at the night.

Hydrogen-alpha emissions were rich in the area. Oblique straight fine dark filaments looked to be connecting two faint hydrogen-alpha emission areas near the center of the frame.

Equipment: Sigma 28mmF1.4 "Art," Dual Narrowband Filter IDAS NB12 or Clear Filter, and EOS R6-SP5, modified by Seo San on ZWO AM5 Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 120MM-mini, and PHD2 Guiding

Exposure: 6 times x 1,800 seconds, 3 x 240 sec, and 5 x 60 seconds at ISO 6,400 and f/3.5 with Dual Narrowband Filter and 3 times 240 seconds and 19 times 60 seconds at ISO 1,600 and f/3.5 with Clear Filter

site: 2,434m above sea level at lat. 24 39 52 south and long. 70 16 11 west near Cerro Armazones in Sierra Vicuña Mackenna in Coast Range of Chile

Ambient temperature was 11 degrees Celsius or 52 degrees Fahrenheit. Wind was mild, and guide error RMS was 0.73". Sky was dark, and SQML was 21.78 at the night.

Hydrogen-alpha emissions were rich in the area. Oblique straight fine dark filaments looked to be connecting two faint hydrogen-alpha emission areas near the center of the frame.

Equipment: Sigma 28mmF1.4 "Art," Dual Narrowband Filter IDAS NB12, and EOS R6-SP5, modified by Seo San on ZWO AM5 Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 120MM-mini, and PHD2 Guiding

Exposure: 6 times x 1,800 seconds, 3 x 240 sec, and 5 x 60 seconds at ISO 6,400 and f/3.5

site: 2,434m above sea level at lat. 24 39 52 south and long. 70 16 11 west near Cerro Armazones in Sierra Vicuña Mackenna in Coast Range of Chile

Ambient temperature was 11 degrees Celsius or 52 degrees Fahrenheit. Wind was mild, and guide error RMS was 0.73". Sky was dark, and SQML was 21.78 at the night.

Hydrogen-alpha emissions were rich in the area. Oblique straight fine dark filaments looked to be connecting two faint hydrogen-alpha emission areas near the center of the frame.

Equipment: Sigma 28mmF1.4 "Art," Dual Narrowband Filter IDAS NB12, and EOS R6-SP5, modified by Seo San on ZWO AM5 Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 120MM-mini, and PHD2 Guiding

Exposure: 6 times x 1,800 seconds, 3 x 240 sec, and 5 x 60 seconds at ISO 6,400 and f/3.5

site: 2,434m above sea level at lat. 24 39 52 south and long. 70 16 11 west near Cerro Armazones in Sierra Vicuña Mackenna in Coast Range of Chile

Ambient temperature was 11 degrees Celsius or 52 degrees Fahrenheit. Wind was mild, and guide error RMS was 0.73". Sky was dark, and SQML was 21.78 at the night.

Hydrogen-alpha emissions were rich in the area. Oblique straight fine dark filaments looked to be connecting two faint hydrogen-alpha emission areas near the center of the frame.

Equipment: Sigma 28mmF1.4 "Art," Dual Narrowband Filter IDAS NB12, and EOS R6-SP5, modified by Seo San on ZWO AM5 Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 120MM-mini, and PHD2 Guiding

Exposure: 6 times x 1,800 seconds, 3 x 240 sec, and 5 x 60 seconds at ISO 6,400 and f/3.5

site: 2,434m above sea level at lat. 24 39 52 south and long. 70 16 11 west near Cerro Armazones in Sierra Vicuña Mackenna in Coast Range of Chile

Ambient temperature was 11 degrees Celsius or 52 degrees Fahrenheit. Wind was mild, and guide error RMS was 0.73". Sky was dark, and SQML was 21.78 at the night.

Yellow laser beams encroached from Cerro Paranal Observatory.

Equipment: Sigma 28mmF1.4 "Art" and EOS R6-SP5, modified by Seo San on ZWO AM5 Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 120MM-mini, and PHD2 Guiding

Exposure: 11 times x 900 seconds, 3 x 240 sec, 19 x 60 sec, and 5 x 15 seconds at ISO 1,600 and f/3.5

site: 2,434m above sea level at lat. 24 39 52 south and long. 70 16 11 west near Cerro Armazones in Sierra Vicuña Mackenna in Coast Range of Chile

Ambient temperature was 11 degrees Celsius or 52 degrees Fahrenheit. Wind was mild, and guide error RMS was 0.73". Sky was dark, and SQML was 21.78 at the night.

Yellow laser beams encroached from Cerro Paranal Observatory.

Equipment: Sigma 28mmF1.4 "Art" and EOS R6-SP5, modified by Seo San on ZWO AM5 Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 120MM-mini, and PHD2 Guiding

Exposure: 11 times x 900 seconds, 3 x 240 sec, 19 x 60 sec, and 5 x 15 seconds at ISO 1,600 and f/3.5

site: 2,434m above sea level at lat. 24 39 52 south and long. 70 16 11 west near Cerro Armazones in Sierra Vicuña Mackenna in Coast Range of Chile

Ambient temperature was 11 degrees Celsius or 52 degrees Fahrenheit. Wind was mild, and guide error RMS was 0.73". Sky was dark, and SQML was 21.78 at the night.

Autoguiding was not perfect, and stars got trailed a bit.

Equipment: Takahashi FSQ-130ED, IDAS NB12 HII OIII Dual Narrowband Filter or Clear Filter, and EOS R-SP4II, modified by Seo San on ZWO AM5n Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 174MM-mini, and PHD2 Guiding

Exposure: 5 x 240 seconds and 7 x 60 seconds at ISO 6,400 and f/5.0, focal length 650mm with NB12 Filter and 3 times x 720 seconds, 4 x 240 sec, 4 x 60 seconds at ISO 1,600 and f/5.0, focal length 650mm with Clear Filter

site: 1,232m above sea level at lat. 36 55 68 North and long. 139 44 57 East near Mt. Keicyo Tochigi 栃木県鶏頂高原. Ambient temperature was around -3 degrees Celsius or 27 degrees Fahrenheit. Wind was mild. Atmospheric turbulence was bad as in the season, and guide error RMS was 1.20".

There encroached clouds soon, and the data were minimal.

Here was another runway star and bow shock cloud like below.

Intrared Bow Shock of Alpha Camelopardalis November 2023:
www.flickr.com/photos/hiroc/53361262500

Equipment: Takahashi FSQ-130ED, IDAS NB12 HII OIII Dual Narrowband Filter, and EOS R-SP4II, modified by Seo San on ZWO AM5n Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 174MM-mini, and PHD2 Guiding

Exposure: 5 x 240 seconds and 7 x 60 seconds at ISO 6,400 and f/5.0, focal length 650mm

site: 1,232m above sea level at lat. 36 55 68 North and long. 139 44 57 East near Mt. Keicyo Tochigi 栃木県鶏頂高原. Ambient temperature was around -3 degrees Celsius or 27 degrees Fahrenheit. Wind was mild. Atmospheric turbulence was bad as in the season, and guide error RMS was 1.20".

There encroached clouds soon, and the data were minimal.

Here was another runway star and bow shock cloud like below.

Intrared Bow Shock of Alpha Camelopardalis November 2023:
www.flickr.com/photos/hiroc/53361264020

Equipment: Takahashi FSQ-130ED, IDAS NB12 HII OIII Dual Narrowband Filter, and EOS R-SP4II, modified by Seo San on ZWO AM5n Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 174MM-mini, and PHD2 Guiding

Exposure: 5 x 240 seconds and 7 x 60 seconds at ISO 6,400 and f/5.0, focal length 650mm

site: 1,232m above sea level at lat. 36 55 68 North and long. 139 44 57 East near Mt. Keicyo Tochigi 栃木県鶏頂高原. Ambient temperature was around -3 degrees Celsius or 27 degrees Fahrenheit. Wind was mild. Atmospheric turbulence was bad as in the season, and guide error RMS was 1.20".

There encroached clouds soon, and the data were minimal.

Equipment: Takahashi FSQ-130ED and EOS R-SP4II, modified by Seo San on ZWO AM5n Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 174MM-mini, and PHD2 Guiding

Exposure: 3 times x 720 seconds, 4 x 240 sec, 4 x 60 seconds at ISO 1,600 and f/5.0, focal length 650mm

site: 1,232m above sea level at lat. 36 55 68 North and long. 139 44 57 East near Mt. Keicyo Tochigi 栃木県鶏頂高原. Ambient temperature was around -3 degrees Celsius or 27 degrees Fahrenheit. Wind was mild. Atmospheric turbulence was bad as in the season, and guide error RMS was 1.20".

There encroached clouds soon, and the data were minimal.

Equipment: Takahashi FSQ-130ED, IDAS Clear Filter, and EOS R-SP4II, modified by Seo San on ZWO AM5n Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 174MM-mini, and PHD2 Guiding

Exposure: 3 times x 720 seconds, 4 x 240 sec, 4 x 60 seconds at ISO 1,600 and f/5.0, focal length 650mm

site: 1,232m above sea level at lat. 36 55 68 North and long. 139 44 57 East near Mt. Keicyo Tochigi 栃木県鶏頂高原. Ambient temperature was around -3 degrees Celsius or 27 degrees Fahrenheit. Wind was mild. Atmospheric turbulence was bad as in the season, and guide error RMS was 1.20".

The area is rich in colorful gas and dust. There were faint dark clouds mainly in two parts on the frame. They shaped the shining nebula, Seagull Nebula. They might be reflecting light from stars nearby and blocking light from the shining nebula behind partly.

I tried exposure for 6 nights as my initial plan, but the telescope rotated 3 degrees unintentionally. Thus, this frame was composed of data taken for 3 nights. Those were enough for my purpose.

Equipment: Takahashi FSQ-106ED, F3 Reducer 0.6x, and EOS 5Dmk3-SP3, modified by Seo San on ZWO AM5 Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 120MM-mini, and PHD2 Guiding

Exposure: 25 times x 900 seconds, 11 x 240 sec, 19 x 60 seconds at ISO 1,600 and f/3.0, focal length 320mm

site: 2,434m above sea level at lat. 24 39 52 south and long. 70 16 11 west near Cerro Armazones in Sierra Vicuña Mackenna in Coast Range of Chile

Ambient temperature was 12 degrees Celsius or 54 degrees Fahrenheit. Wind was mild, and guide error RMS was 0.76". Sky was dark, and SQML was 21.43 at the night.

The area is rich in colorful gas and dust. There were faint dark clouds mainly in two parts on the frame. They shaped the shining nebula, Seagull Nebula. They might be reflecting light from stars nearby and blocking light from the shining nebula behind partly.

I tried exposure for 6 nights as my initial plan, but the telescope rotated 3 degrees unintentionally. Thus, this frame was composed of data taken for 3 nights. Those were enough for my purpose.

Equipment: Takahashi FSQ-106ED, F3 Reducer 0.6x, and EOS 5Dmk3-SP3, modified by Seo San on ZWO AM5 Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 120MM-mini, and PHD2 Guiding

Exposure: 25 times x 900 seconds, 11 x 240 sec, 19 x 60 seconds at ISO 1,600 and f/3.0, focal length 320mm

site: 2,434m above sea level at lat. 24 39 52 south and long. 70 16 11 west near Cerro Armazones in Sierra Vicuña Mackenna in Coast Range of Chile

Ambient temperature was 12 degrees Celsius or 54 degrees Fahrenheit. Wind was mild, and guide error RMS was 0.76". Sky was dark, and SQML was 21.43 at the night.

I could make deep and color-balanced frame with dual narrowband filter without extreme enhancement of color saturation.

Seagull Nebula with Apo-Elmarit-R 180mmF2.8 January 2014:
www.flickr.com/photos/hiroc/13418703273

Equipment: Sigma 105mmF1.4 "Art", IDAS NB12 Dual Narrowband Filter or Clear Filter, and EOS R-SP4ii, modified by Seo San on ZWO AM5 Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 120MM-mini, and PHD2 Guiding

Exposure: 10 times x 1800 seconds, 8 x 900 sec, 13 x 240 sec, 19 x 60 seconds at ISO 6,400 and f/3.2 with NB12 Filter and 27 times x 900 seconds, 7 x 240 sec, 9 x 60 second at ISO 1,600 and f/3.2 with Clear Filter

site: 2,434m above sea level at lat. 24 39 52 south and long. 70 16 11 west near Cerro Armazones in Sierra Vicuña Mackenna in Coast Range of Chile

Ambient temperature was 11 degrees Celsius or 52 degrees Fahrenheit. Wind was mild, and guide error RMS was 0.73". Sky was dark, and SQML was 21.78 at the night.

Equipment: Sigma 105mmF1.4 "Art", IDAS NB12 Dual Narrowband Filter, and EOS R-SP4ii, modified by Seo San on ZWO AM5 Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 120MM-mini, and PHD2 Guiding

Exposure: 10 times x 1800 seconds, 8 x 900 sec, 13 x 240 sec, 19 x 60 seconds at ISO 6,400 and f/3.2

site: 2,434m above sea level at lat. 24 39 52 south and long. 70 16 11 west near Cerro Armazones in Sierra Vicuña Mackenna in Coast Range of Chile

Ambient temperature was 11 degrees Celsius or 52 degrees Fahrenheit. Wind was mild. Sky was dark, and SQML was 21.69 at the night.

Equipment: Sigma 105mmF1.4 "Art", IDAS NB12 Dual Narrowband Filter, and EOS R-SP4ii, modified by Seo San on ZWO AM5 Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 120MM-mini, and PHD2 Guiding

Exposure: 10 times x 1800 seconds, 8 x 900 sec, 13 x 240 sec, 19 x 60 seconds at ISO 6,400 and f/3.2

site: 2,434m above sea level at lat. 24 39 52 south and long. 70 16 11 west near Cerro Armazones in Sierra Vicuña Mackenna in Coast Range of Chile

Ambient temperature was 11 degrees Celsius or 52 degrees Fahrenheit. Wind was mild. Sky was dark, and SQML was 21.69 at the night.

Equipment: Sigma 105mmF1.4 "Art" , Canon Clear Filter, and EOS R-SP4ii, modified by Seo San on ZWO AM5 Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 120MM-mini, and PHD2 Guiding

Exposure: 27 times x 900 seconds, 7 x 240 sec, 9 x 60 second at ISO 1,600 and f/3.2

site: 2,434m above sea level at lat. 24 39 52 south and long. 70 16 11 west near Cerro Armazones in Sierra Vicuña Mackenna in Coast Range of Chile

Ambient temperature was 11 degrees Celsius or 52 degrees Fahrenheit. Wind was mild, and guide error RMS was 0.73". Sky was dark, and SQML was 21.78 at the night.

Equipment: Sigma 105mmF1.4 "Art" , Canon Clear Filter, and EOS R-SP4ii, modified by Seo San on ZWO AM5 Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 120MM-mini, and PHD2 Guiding

Exposure: 27 times x 900 seconds, 7 x 240 sec, 9 x 60 second at ISO 1,600 and f/3.2

site: 2,434m above sea level at lat. 24 39 52 south and long. 70 16 11 west near Cerro Armazones in Sierra Vicuña Mackenna in Coast Range of Chile

Ambient temperature was 11 degrees Celsius or 52 degrees Fahrenheit. Wind was mild, and guide error RMS was 0.73". Sky was dark, and SQML was 21.78 at the night.

43x 600 sec( 7.2 hrs). through 6nm Ha filter and Esprit 100 refractor/ QHY16200 CCD camera @ -20C. On 17,18,19 and 20 November 2017.

Knight Observatory, Tomar