Cone Nebula / Christmas Tree Cluster - NGC 2264

 Cone Nebula and the Christmas tree Cluster (NGC 2264) true color image taken on March 14, 2026 from Avana Eastlake apartments, Colorado (Location on Google Maps)

Federico Arribas

Telescope:

Askar 71F | 490 mm | f/6.9

Camera:

ZWO ASI2600MC Pro | APSC | 6248 x 4176 px

Mount:

ZWO AM3N

Guiding:

SVBONY SV106, 50mm F3.8 guide scope

ZWO ASI120MM Mini

Control:

ZWO ASIAir Plus

Filter:

SV220 Dual narrowband Ha + OIII 7nm

Imaging:

100 minutes integration time

300 seconds subs

GAIN 100

Notes:

Bortle 7

Moon: 9%

Crop: 6000x4000 px

Jellyfish Nebula - IC 443

Jellyfish Nebula (IC 443) true color and HOO palette images taken on March 20, 2026 from Avana Eastlake apartments, Thornton, Colorado (Location on Google Maps)

Federico Arribas

Federico Arribas

Telescope:
Askar 71F | 490 mm | f/6.9

Camera:

ZWO ASI2600MC Pro | APSC | 6248 x 4176 px

Mount:

ZWO AM3N

Guiding:

SVBONY SV106, 50mm F3.8 guide scope

ZWO ASI120MM Mini

Control:

ZWO ASIAir Plus

Filter:

SV220 Dual narrowband Ha + OIII 7nm

Imaging:

210 minutes integration time

300 seconds subs

GAIN 100

Notes:

Bortle 7

Moon: 5%

Crop: 6000x4000 px

Tadpoles Nebula - NGC 1893

Tadpoles Nebula (NGC 1893) HOO palette image taken on November 22, 2025 from Kline-Dodge dark site of the Denver Astronomical Society (DAS) near Deer Trail, Colorado (Location in Google Maps).

Federico Arribas

Telescope:

Askar 71F | 490 mm | f/6.9

Camera:

ZWO ASI2600MC Pro | APSC | 6248 x 4176 px

Mount:

Sky Watcher Star Adventurer GTi

Guiding:

SVBONY SV106, 50mm F3.8 guide scope

ZWO ASI120MM Mini

Control:

ZWO ASIAir Plus

Filter:

SV220 Dual narrowband Ha + OIII 7nm

Imaging:

245 minutes integration time

300 seconds subs

GAIN 100

Notes:

Bortle 3

Moon: 8%

Crop: 6000x4000 px

Lobster Claw Nebula - NGC 7535

Lobster Claw Nebula (NGC 7535) Foraxx palette image taken on October 18, 2025 from Kline-Dodge dark site of the Denver Astronomical Society (DAS) near Deer Trail, Colorado (Location in Google Maps).

Federico Arribas

Telescope:
Askar 71F | 490 mm | f/6.9

Camera:

ZWO ASI2600MC Pro | APSC | 6248 x 4176 px

Mount:

Sky Watcher Star Adventurer GTi

Guiding:

SVBONY SV106, 50mm F3.8 guide scope

ZWO ASI120MM Mini

Control:

ZWO ASIAir Plus

Filter:

SV220 Dual narrowband Ha + OIII 7nm

Imaging:

190 minutes integration time

300 seconds subs

GAIN 100

Notes:

Bortle 3

Moon: 8%

Crop: 6000x4000 px

Horsehead Nebula - IC 434

Horsehead Nebula (IC 434) true color image taken on January 17, 2026 from Sandstone Ranch of the Douglas County, Colorado (Location on Google Maps)

Federico Arribas

Telescope: 

Askar 71F | 490 mm | f/6.9

Camera:

ZWO ASI2600MC Pro | APSC | 6248 x 4176 px

Mount:

ZWO AM3N

Guiding:

SVBONY SV106, 50mm F3.8 guide scope

ZWO ASI120MM Mini

Control:

ZWO ASIAir Plus

Filter:

SV220 Dual narrowband Ha + OIII 7nm

Imaging:

140 minutes integration time

300 seconds subs

GAIN 100

Notes:

Bortle 3

Moon: 1%

Crop: 6000x4000 px

NGC 1499 - California Nebula

California Nebula (NGC 1499) true color image taken on July 26, 2025 from Kline-Dodge dark site of the Denver Astronomical Society (DAS) near Deer Trail, Colorado (Location in Google Maps).

Federico Arribas

Telescope:

Askar 71F | 490 mm | f/6.9

Camera:

ZWO ASI2600MC Pro | APSC | 6248 x 4176 px

Mount:

Sky Watcher Star Adventurer GTi

Guiding:

SVBONY SV106, 50mm F3.8 guide scope

ZWO ASI120MM Mini

Control:

ZWO ASIAir Plus

Filter:

SV220 Dual narrowband Ha + OIII 7nm

Imaging:

42 minutes integration time

120 seconds subs

GAIN 100

Notes:

Bortle 3

Moon: 5%

Crop: 6000x4000 px

NGC 6888 - Crescent nebula

Crescent Nebula (NGC 6888) image taken on  July 26, 2025 from Kline-Dodge dark site of the Denver Astronomical Society (DAS) near Deer Trail, Colorado (Location in Google Maps).

Federico Arribas

Telescope:

Askar 71F | 490 mm | f/6.9

Camera:

ZWO ASI2600MC Pro | APSC | 6248 x 4176 px

Mount:

Sky Watcher Star Adventurer GTi

Guiding:

SVBONY SV106, 50mm F3.8 guide scope

ZWO ASI120MM Mini

Control:

ZWO ASIAir Plus

Filter:

SV220 Dual narrowband Ha + OIII 7nm

Imaging:

120 minutes integration time

300 seconds subs

GAIN 100

Notes:

Bortle 3

Moon: 5%

Crop: 6000x4000 px

NGC 6960 - West Veil Nebula

West Veil Nebula (NGC 6960) image taken on May 24, 2025 from Fairplay, Colorado (Location in Google Maps)

federico Arribas

Telescope:

Sky Watcher Evolux 62ED | 400 mm | f/6.45

0.9x Reducer/Flattener ---> 360 mm | f/5.8

Camera:

ZWO ASI2600MC Pro | APSC | 6248 x 4176 px

Mount:

Sky Watcher Star Adventurer GTi

Guiding:

SVBONY SV165, 40mm F4 guide scope

ZWO ASI120MM Mini

Control:

ZWO ASIAir Plus

Filter:

SV220 Dual narrowband Ha + OIII 7nm

Imaging:

120 minutes integration time

300 seconds subs

GAIN 100

Notes:

Bortle 3

Moon: 6%

Crop: 6000x4000 px

Lagoon and Trifid Nebulas - M8-M20 Region

Lagoon and Trifid Nebulas (M8 and M20) image taken on May 23, 205 from Fairplay, Colorado (Location in Google Maps))

Federico Arribas

Telescope:

Sky Watcher Evolux 62ED | 400 mm | f/6.45

0.9x Reducer/Flattener ---> 360 mm | f/5.8

Camera:

ZWO ASI2600MC Pro | APSC | 6248 x 4176 px

Mount:

Sky Watcher Star Adventurer GTi

Guiding:

SVBONY SV165, 40mm F4 guide scope

ZWO ASI120MM Mini

Control:

ZWO ASIAir Plus

Imaging:

122 minutes integration time

120 seconds subs

GAIN 100

Notes:

Bortle 3

Moon: 18%

Crop: 6000x4000 px

M13 - Hercules Globular Cluster

Hercules Globular Cluster (M13) image taken on May 23, 2025 from Fairplay, Colorado (Location in Google Maps)

Federico Arribas

Telescope:

Sky Watcher Evolux 62ED | 400 mm | f/6.45

0.9x Reducer/Flattener ---> 360 mm | f/5.8

Camera:

ZWO ASI2600MC Pro | APSC | 6248 x 4176 px

Mount:

Sky Watcher Star Adventurer GTi

Guiding:

SVBONY SV165, 40mm F4 guide scope

ZWO ASI120MM Mini

Control:

ZWO ASIAir Plus

Imaging:

64 minutes integration time

120 seconds subs

GAIN 100

Notes:

Bortle 3

Moon: 18%

Crop: 3000x2000 px

IC 1396 - Elephant Trunk Nebula

Elephant Trunk Nebula (IC 1396) image taken on May 22, 2025 from Fairplay, Colorado (Location in Google Maps)

Federico Arribas

Telescope:

Sky Watcher Evolux 62ED | 400 mm | f/6.45

0.9x Reducer/Flattener ---> 360 mm | f/5.8

Camera:

ZWO ASI2600MC Pro | APSC | 6248 x 4176 px

Mount:

Sky Watcher Star Adventurer GTi

Guiding:

SVBONY SV165, 40mm F4 guide scope

ZWO ASI120MM Mini

Control:

ZWO ASIAir Plus

Imaging:

96 minutes integration time

180 seconds subs

GAIN 100

Notes:

Bortle 3

Moon: 28%

Crop: 6189x4113 px

Virgo Galaxy Cluster

Virgo Galaxy Cluster image, with M87 at the center, taken on February 3, 2025 from Bear Cabin, near Williams, Arizona (Location in Google Maps)

Federico Arribas

Telescope:

Sky Watcher Evolux 62ED | 400 mm | f/6.45

0.9x Reducer/Flattener ---> 360 mm | f/5.8

Camera:

ZWO ASI2600MC Pro | APSC | 6248 x 4176 px

Mount:

Sky Watcher Star Adventurer GTi

Guiding:

SVBONY SV165, 40mm F4 guide scope

ZWO ASI120MM Mini

Control:

ZWO ASIAir Plus

Imaging:

90 minutes integration time

120 seconds subs

GAIN 100

Notes:

Bortle 2

Moon: 18%

Crop: 6221x4147 px

IC 1805 - Heart Nebula

Heart Nebula (IC 1805) taken on February 2, 2025 from Bear Cabin, near Williams, Arizona (Location in Google Maps)

Federico Arribas

Telescope:

Sky Watcher Evolux 62ED | 400 mm | f/6.45

0.9x Reducer/Flattener ---> 360 mm | f/5.8

Camera:

ZWO ASI2600MC Pro | APSC | 6248 x 4176 px

Mount:

Sky Watcher Star Adventurer GTi

Guiding:

SVBONY SV165, 40mm F4 guide scope

ZWO ASI120MM Mini

Control:

ZWO ASIAir Plus

Imaging:

250 minutes integration time

180 seconds subs

GAIN 100

Notes:

Bortle 2

Moon: 18%

Crop: 6000x4000 px

NGC 7000 - North America Nebula

North America Nebula (NGC 7000) taken on July 5, 2024 from Kline-Dodge dark site of the Denver Astronomical Society (DAS) near Deer Trail, Colorado.

Federico Arribas

Telescope:

Sky Watcher Evolux 62ED | 400 mm | f/6.45

0.9x Reducer/Flattener ---> 360 mm | f/5.8

Camera:

Canon EOS 250D | APSC | 6024 x 4020 px

Mount:

Sky Watcher Star Adventurer GTi

Guiding:

SVBONY SV165, 40mm F4 guide scope

ZWO ASI120MM Mini

Control:

ZWO ASIAir Plus

Imaging:

150 minutes integration time

ISO 800

Notes:

Guiding for the first time
Bortle 2
Moon: 0%

Solar Eclipse - April 8, 2024

 

Time lapse sequence of 308 individual images taken from 10:25 AM to 1:07 PM MST from Thornton, Colorado. Although it was a total eclipse, Thornton was not on the totality path, so it was observed as parcial.

C49 - Rosette Nebula

Rosette Nebula (C49) taken on December 7, 2023 from Kline-Dodge dark site of the Denver Astronomical Society (DAS) near Deer Trail, Colorado.

Federico Arribas

Telescope:
Sky Watcher Evolux 62ED | 400 mm | f/6.45
0.9x Reducer/Flattener ---> 360 mm | f/5.8

Camera:
Canon EOS 250D | APSC | 6024 x 4020 px

Mount:
Sky Watcher Star Adventurer GTi

Imaging:
18 minutes integration time
ISO 800

Notes:
Only tracking, no guiding
Bortle 2
Moon: 23%

M42 - Orion Nebula

Orion Nebula (M42) taken on December 7, 2023 from Kline-Dodge dark site of the Denver Astronomical Society (DAS) near Deer Trail, Colorado.

Federico Arribas

Telescope:
Sky Watcher Evolux 62ED | 400 mm | f/6.45
0.9x Reducer/Flattener ---> 360 mm | f/5.8

Camera:
Canon EOS 250D | APSC | 6024 x 4020 px

Mount:
Sky Watcher Star Adventurer GTi

Imaging:
55 minutes integration time
ISO 800

Notes:
Only tracking, no guiding
Bortle 2
Moon: 23%
Crop: 3563 x 2738 px

M31 - Andromeda Galaxy

Andromeda Galaxy (M31) on the constellation of Andromeda. Taken on November 11, 2023 from Kline-Dodge dark site of the Denver Astronomical Society (DAS) near Deer Trail, Colorado.

Federico Arribas

Telescope:
Sky Watcher Evolux 62ED | 400 mm | f/6.45
0.9x Reducer/Flattener ---> 360 mm | f/5.8

Camera:
Canon EOS 250D | APSC | 6024 x 4020 px

Mount:
Sky Watcher Star Adventurer GTi

Imaging:
100 minutes integration time
ISO 1600

Notes:
Only tracking, no guiding
Bortle 2
Moon: 4%

M45 - Pleiades

Pleiades open star cluster (M45) in the constellation Taurus. Taken on October 20, 2023 from Sandstone Ranch, Colorado.

Federico Arribas

Telescope:
Sky Watcher Evolux 62ED | 400 mm | f/6.45
0.9x Reducer/Flattener ---> 360 mm | f/5.8

Camera:
Canon EOS 250D | APSC | 6024 x 4020 px

Mount:
Sky Watcher Star Adventurer GTi

Imaging:
37 minutes integration time
ISO 25600 (accidentally)

Notes:
Only tracking, no guiding
Bortle 4

Solar Eclipse - October 14, 2023

 

 

Time lapse sequence of 180 individual images taken from 10:12 AM to 12:59 PM MST from Thornton, Colorado. Although the eclipse was an anular one, Thornton was not on the anularity path, so it was observed as parcial.

Sequence of picturess showing the different phases of the eclipse with their times.