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Andromeda Galaxy Messier 31

Silver Sliver Galaxy NGC 891

Triangulum Galaxy, Messier 33

Caldwell 38, Needle Galaxy

M63, Sunflower Galaxy

Messier 106 in Canes Venatici

M51, Whirlpool Galaxy

Messier 95 through haze

The Leo Triplet

Messier 74 Galaxy

The Triangulum Galaxy

Triangulum Galaxy M33

Whale Galaxy NGC 4631

The Leo Triplet

Blowdryer Galaxy Messier 100

Pinwheel Galaxy M101

Whirlpool Galaxy M51 Wide

The Leo Triplet

Wide Leo Triplet

Virgo Cluster of Galaxies

NGC 5128 Centaurus A

21 Images

Upload date: 2023-12-15 ID: 1614

Andromeda Galaxy Messier 31

Image data: 3760 x 2115 pixels, 8.639 MB
File: 2023-12-15-0933utc-m31-samyang135mm-f2-imx585-lpr2-g220-60s-37x-10darks-atlas.png

Image Data

Andromeda Galaxy Messier 31

Date: 2023-12-15	Time: 09:33 UTC
Mount:	Orion Atlas EQ-G
Telescope:	Samyang 135mm (Ø67mm/FL=135mm)/FR = 2
Barlow/Reducer:	1x (eff FL = 135mm)
Filter:	Kenko ASTRO LPR Type II
Camera:	Player One Uranus-C (8.3MP, 11.14 x 6.26mm, 2.9µm)

Image size: 3760 x 2115 px
Image scale: 4.426"/px
Image FOV: 4.62 x 2.60°

Exposure: 60sec @gain: 220
Lights: 37, integration: 0h 37m 00s
Image is not drizzled

Upload date: 2023-12-09 ID: 1601

Silver Sliver Galaxy NGC 891

Image data: 3655 x 2056 pixels, 3.560 MB
File: 2023-12-08-1151utc-ngc891-450mm-imx585-lpr2-g220-180s-53x-5darks-40flats-40bias-atlas.jpg

Image Data

Silver Sliver Galaxy NGC 891

Date: 2023-12-08	Time: 11:51 UTC
Mount:	Orion Atlas EQ-G
Telescope:	TS-Optics TS71SDQ (Ø71mm/FL=450mm)
Barlow/Reducer:	1x Native (eff FL = 450mm)
Filter:	Kenko ASTRO LPR Type II
Camera:	Player One Uranus-C (8.3MP, 11.14 x 6.26mm, 2.9µm)

Image size: 3655 x 2056 px
Image scale: 1.329"/px
Image FOV: 1.35 x 0.76°

Exposure: 180sec @gain: 220
Lights: 53, integration: 2h 38m 59s
Image is not drizzled

Upload date: 2023-11-07 ID: 1540

Triangulum Galaxy, Messier 33

Image data: 3835 x 2150 pixels, 7.877 MB
File: 2023-11-06-1053utc-m33-450mm-imx585-lpr2-g215-120s-87x-20darks-atlas.png

Image Data

Triangulum Galaxy, Messier 33

Date: 2023-11-06	Time: 10:53 UTC
Mount:	Orion Atlas EQ-G
Telescope:	TS-Optics TS71SDQ (Ø71mm/FL=450mm)
Barlow/Reducer:	1x Native (eff FL = 450mm)
Filter:	Kenko ASTRO LPR Type II
Camera:	Player One Uranus-C (8.3MP, 11.14 x 6.26mm, 2.9µm)

Image size: 3835 x 2150 px
Image scale: 1.329"/px
Image FOV: 1.42 x 0.79°

Exposure: 120sec @gain: 215
Lights: 87, integration: 2h 53m 59s
Image is not drizzled

Upload date: 2023-04-19 ID: 1379

Caldwell 38, Needle Galaxy

Image data: 4800 x 2700 pixels, 1.124 MB
File: 2023-04-18-1150utc-c68-1280-d5500-120s-iso1600-44x-siril_atlas-25calib.jpg

Image Data

Caldwell 38, Needle Galaxy

Date: 2023-04-18	Time: 11:50 UTC
Mount:	Orion Atlas EQ-G
Telescope:	Celestron 8 XLT (Ø203mm/FL=2030mm)
Barlow/Reducer:	0.683x + Baader Clicklock (eff FL = 1428mm)
Camera:	Nikon D5500 (24.0MP, 23.5 x 15.6mm, 3.92µm)

Image size: 4800 x 2700 px
Image scale: 0.566"/px
Image FOV: 45.29 x 25.48 arc min

Exposure: 120 sec | ISO1600 | f/0
Lights: 44, integration: 1h 27m 59s
Image is not drizzled

Upload date: 2023-04-19 ID: 1380

M63, Sunflower Galaxy

Image data: 4800 x 2700 pixels, 3.628 MB
File: 2023-04-17-1127utc-m63-1280-d5500-120s-iso1600-107x-siril_atlas-25calib.jpg

Image Data

M63, Sunflower Galaxy

Date: 2023-04-17	Time: 11:27 UTC
Mount:	Orion Atlas EQ-G
Telescope:	Celestron 8 XLT (Ø203mm/FL=2030mm)
Barlow/Reducer:	0.683x + Baader Clicklock (eff FL = 1428mm)
Camera:	Nikon D5500 (24.0MP, 23.5 x 15.6mm, 3.92µm)

Image size: 4800 x 2700 px
Image scale: 0.566"/px
Image FOV: 45.29 x 25.48 arc min

Exposure: 120 sec | ISO1600 | f/0
Lights: 107, integration: 3h 34m 00s
Image is not drizzled

Upload date: 2023-04-19 ID: 1374

Messier 106 in Canes Venatici

Image data: 4800 x 2700 pixels, 4.197 MB
File: 2023-04-16-1120utc-m106-1280-d5500-120s-iso1600-80x-dss_siril_atlas-25calib.jpg

Image Data

Messier 106 in Canes Venatici

Date: 2023-04-16	Time: 11:20 UTC
Mount:	Orion Atlas EQ-G
Telescope:	Celestron 8 XLT (Ø203mm/FL=2030mm)
Barlow/Reducer:	0.683x + Baader Clicklock (eff FL = 1428mm)
Camera:	Nikon D5500 (24.0MP, 23.5 x 15.6mm, 3.92µm)

Image size: 4800 x 2700 px
Image scale: 0.566"/px
Image FOV: 45.29 x 25.48 arc min

Exposure: 120 sec | ISO1600 | f/0
Lights: 80, integration: 2h 39m 59s
Image is not drizzled

Upload date: 2023-04-19 ID: 1377

M51, Whirlpool Galaxy

Image data: 4800 x 2700 pixels, 2.014 MB
File: 2023-04-10-1240utc-m51-1280-d5500-120s-iso1600-10x-siril-atlas-dfb.jpg

Image Data

M51, Whirlpool Galaxy

Date: 2023-04-10	Time: 12:40 UTC
Mount:	Orion Atlas EQ-G
Telescope:	Celestron 8 XLT (Ø203mm/FL=2030mm)
Barlow/Reducer:	0.683x + Baader Clicklock (eff FL = 1428mm)
Camera:	Nikon D5500 (24.0MP, 23.5 x 15.6mm, 3.92µm)

Image size: 4800 x 2700 px
Image scale: 0.566"/px
Image FOV: 45.29 x 25.48 arc min

Exposure: 120 sec | ISO1600 | f/0
Lights: 10, integration: 0h 20m 00s
Image is not drizzled

Upload date: 2023-03-17 ID: 1363

Messier 95 through haze

Image data: 4800 x 2700 pixels, 2.190 MB
File: 2023-03-16-1115utc-m95-1280-d5500-120s-iso1600-50x-siril-atlas-dfb.jpg

Image Data

Messier 95 through haze

Date: 2023-03-16	Time: 11:15 UTC
Mount:	Orion Atlas EQ-G
Telescope:	Celestron 8 XLT (Ø203mm/FL=2030mm)
Barlow/Reducer:	0.683x + Baader Clicklock (eff FL = 1428mm)
Camera:	Nikon D5500 (24.0MP, 23.5 x 15.6mm, 3.92µm)

Image size: 4800 x 2700 px
Image scale: 0.566"/px
Image FOV: 45.29 x 25.48 arc min

Exposure: 120 sec | ISO1600 | f/0
Lights: 50, integration: 1h 40m 00s
Image is not drizzled

Upload date: 2023-03-22 ID: 1365

The Leo Triplet

Image data: 5200 x 2925 pixels, 2.549 MB
File: 2023-03-10-1315utc-leo-triplet-2000-d5500-120s-iso1600-30x-dss-atlas-nocalib.jpg

Image Data

The Leo Triplet

Date: 2023-03-10	Time: 13:15 UTC
Mount:	Orion Atlas EQ-G
Telescope:	Celestron 8 XLT (Ø203mm/FL=2030mm)
Barlow/Reducer:	0.683x Native (eff FL = 1386mm)
Camera:	Nikon D5500 (24.0MP, 23.5 x 15.6mm, 3.92µm)

Image size: 5200 x 2925 px
Image scale: 0.583"/px
Image FOV: 50.54 x 28.43 arc min

Exposure: 120 sec | ISO1600 | f/0
Lights: 30, integration: 1h 00m 00s
Image is not drizzled

Upload date: 2021-11-28 ID: 1046

Messier 74 Galaxy

Image data: 4000 x 2250 pixels, 2.703 MB
File: 2021-11-24-1220utc-m74-d5500-iso1600-120s-65x-atlas-calib.jpg

Image Data

Messier 74 Galaxy

Date: 2021-11-24	Time: 12:20 UTC
Mount:	Orion Atlas EQ-G
Telescope:	Sky-Watcher BKP150 (Ø150mm/FL=750mm)
Barlow/Reducer:	1x Native (eff FL = 750mm)
Camera:	Nikon D5500 (24.0MP, 23.5 x 15.6mm, 3.92µm)

Image size: 4000 x 2250 px
Image scale: 1.078"/px
Image FOV: 1.20 x 0.67°

Exposure: 120 sec | ISO1600 | f/0
Lights: 65, integration: 2h 09m 59s
Image is not drizzled

Upload date: 2021-11-02 ID: 1011

The Triangulum Galaxy

Image data: 5600 x 3150 pixels, 7.046 MB
File: 2021-10-31-1230utc-m33-d5500-450mm-iso1600-180s-55x-lpf-atlas-nocalib.jpg

Image Data

The Triangulum Galaxy

Date: 2021-10-31	Time: 12:30 UTC
Mount:	Orion Atlas EQ-G
Telescope:	TS-Optics TS71SDQ (Ø71mm/FL=450mm)
Barlow/Reducer:	1x Native (eff FL = 450mm)
Filter:	Kenko Starry Night
Camera:	Nikon D5300 (24.0MP, 23.5 x 15.6mm, 3.92µm)

Image size: 5600 x 3150 px
Image scale: 1.797"/px
Image FOV: 2.80 x 1.57°

Exposure: 180 sec | ISO1600 | f/0
Lights: 55, integration: 2h 45m 00s
Image is not drizzled

Upload date: 2021-09-10 ID: 841

Triangulum Galaxy M33

Image data: 5600 x 3150 pixels, 3.911 MB
File: 2021-09-07-1630utc-m33-d5500-1280mm-iso1600-180s-50x-atlas-nocalib_pscs2.jpg

Image Data

In spite of bad tracking/guiding

Date: 2021-09-07	Time: 16:30 UTC
Mount:	Orion Atlas EQ-G
Telescope:	Celestron 8 XLT (Ø203mm/FL=2030mm)
Barlow/Reducer:	0.683x Native (eff FL = 1386mm)
Camera:	Nikon D5500 (24.0MP, 23.5 x 15.6mm, 3.92µm)

Image size: 5600 x 3150 px
Image scale: 0.583"/px
Image FOV: 54.43 x 30.62 arc min

Exposure: 180 sec | ISO1600 | f/0
Lights: 50, integration: 2h 30m 00s
Image is not drizzled

Upload date: 2021-05-03 ID: 717

Whale Galaxy NGC 4631

Image data: 4800 x 2700 pixels, 5.617 MB
File: 2021-05-02-1230utc-ngc4631-d5500-1280mm-iso1600-120s-50x-atlas.jpg

Image Data

First test with 0.63 reducer (obstacles: wind gusts, optical axis tilt, poor seeing.) Insets are M57 (6 frames) and M13 (9 frames).

Date: 2021-05-02	Time: 12:30 UTC
Mount:	Orion Atlas EQ-G
Telescope:	Celestron 8 XLT (Ø203mm/FL=2030mm)
Barlow/Reducer:	0.683x Native (eff FL = 1386mm)
Camera:	Nikon D5500 (24.0MP, 23.5 x 15.6mm, 3.92µm)

Image size: 4800 x 2700 px
Image scale: 0.583"/px
Image FOV: 46.65 x 26.24 arc min

Exposure: 120 sec | ISO1600 | f/0
Lights: 50, integration: 1h 40m 00s
Image is not drizzled

Upload date: 2021-02-10 ID: 638

The Leo Triplet

Image data: 5400 x 3038 pixels, 5.637 MB
File: 2021-02-07-1530utc-leotriplet-d5500-450mm-iso800-180s-38x-lpf-atlas_app.jpg

Image Data

A sobering result for almost two hours integration.

Date: 2021-02-07	Time: 15:30 UTC
Mount:	Orion Atlas EQ-G
Telescope:	TS-Optics TS71SDQ (Ø71mm/FL=450mm)
Barlow/Reducer:	1x Native (eff FL = 450mm)
Filter:	Kenko Starry Night
Camera:	Nikon D5500 (24.0MP, 23.5 x 15.6mm, 3.92µm)

Image size: 5400 x 3038 px
Image scale: 1.797"/px
Image FOV: 2.70 x 1.52°

Exposure: 180 sec | ISO800 | f/0
Lights: 38, integration: 1h 53m 59s
Image is not drizzled

Upload date: 2020-04-18 ID: 353

Blowdryer Galaxy Messier 100

Image data: 6000 x 3375 pixels, 3.201 MB
File: 2020-04-16-1230utc-d5300-m100-450mm-30s-iso3200-150x-30drks-30flts-30bias-atlas-aguide.jpg

Image Data

Walking background noise.

Date: 2020-04-16	Time: 12:30 UTC
Mount:	Orion Atlas EQ-G
Telescope:	TS-Optics TS71SDQ (Ø71mm/FL=450mm)
Barlow/Reducer:	1x Native (eff FL = 450mm)
Camera:	Nikon D5300 (24.0MP, 23.5 x 15.6mm, 3.92µm)

Image size: 6000 x 3375 px
Image scale: 1.797"/px
Image FOV: 2.99 x 1.68°

Exposure: 30 sec | ISO3200 | f/0
Lights: 150, integration: 1h 15m 00s
Image is not drizzled

Upload date: 2020-04-18 ID: 357

Pinwheel Galaxy M101

Image data: 6000 x 3375 pixels, 2.436 MB
File: 2020-04-16-1430utc-d5300-m101-450mm-30s-iso3200-140x-30drks-30flts-30bias-atlas-aguide.jpg

Image Data

Walking color noise.

Date: 2020-04-16	Time: 14:30 UTC
Mount:	Orion Atlas EQ-G
Telescope:	TS-Optics TS71SDQ (Ø71mm/FL=450mm)
Barlow/Reducer:	1x Native (eff FL = 450mm)
Camera:	Nikon D5300 (24.0MP, 23.5 x 15.6mm, 3.92µm)

Image size: 6000 x 3375 px
Image scale: 1.797"/px
Image FOV: 2.99 x 1.68°

Exposure: 30 sec | ISO3200 | f/0
Lights: 140, integration: 1h 10m 00s
Image is not drizzled

Upload date: 2020-04-25 ID: 358

Whirlpool Galaxy M51 Wide

Image data: 5699 x 3730 pixels, 2.367 MB
File: 2020-03-24-1420utc-m51-d5300-750mm-cc-60s-iso1600-80x-25drk-25flt-atlas-aguide-wide.jpg

Image Data

Full image width and differently processed.

Date: 2020-03-24	Time: 14:20 UTC
Mount:	Orion Atlas EQ-G
Telescope:	Sky-Watcher BKP150 (Ø150mm/FL=750mm)
Barlow/Reducer:	1x Native (eff FL = 750mm)
Camera:	Nikon D5300 (24.0MP, 23.5 x 15.6mm, 3.92µm)

Image size: 5699 x 3730 px
Image scale: 1.078"/px
Image FOV: 1.71 x 1.12°

Exposure: 60 sec | ISO1600 | f/0
Lights: 80, integration: 1h 19m 59s
Image is not drizzled

Upload date: 2020-03-18 ID: 338

The Leo Triplet

Image data: 3007 x 1691 pixels, 0.494 MB
File: 2020-03-16-1340utc-m66-d5500-750mm-cc-60s-iso1600-58x-20drks-noflt-atlas-aguide.jpg

Image Data

Cropped 50% due to coma and trailing stars as a result of a loosely sitting T-ring. The Nikon D5500 appears to produce more noise than the Nikon D5300 with the same settings in spite of sporting the same sensor.

Date: 2020-03-16	Time: 13:40 UTC
Mount:	Orion Atlas EQ-G
Telescope:	Sky-Watcher BKP150 (Ø150mm/FL=750mm)
Barlow/Reducer:	1x Native (eff FL = 750mm)
Camera:	Nikon D5500 (24.0MP, 23.5 x 15.6mm, 3.92µm)

Image size: 3007 x 1691 px
Image scale: 1.078"/px
Image FOV: 54.03 x 30.38 arc min

Exposure: 60 sec | ISO1600 | f/0
Lights: 58, integration: 0h 58m 00s
Image is not drizzled

Upload date: 2020-04-12 ID: 348

Wide Leo Triplet

Image data: 6012 x 3382 pixels, 1.851 MB
File: 2020-03-15-1400utc-m66-d5500-450mm-60s-iso3200-47x-30drks-noflt-atlas_1.jpg

Image Data

Acceptable after intensive noise reduction.

Date: 2020-03-15	Time: 14:00 UTC
Mount:	Orion Atlas EQ-G
Telescope:	TS-Optics TS71SDQ (Ø71mm/FL=450mm)
Barlow/Reducer:	1x Native (eff FL = 450mm)
Camera:	Nikon D5500 (24.0MP, 23.5 x 15.6mm, 3.92µm)

Image size: 6012 x 3382 px
Image scale: 1.797"/px
Image FOV: 3.00 x 1.69°

Exposure: 30 sec | ISO3200 | f/0
Lights: 47, integration: 0h 23m 30s
Image is not drizzled

Upload date: 2020-01-03 ID: 257

Virgo Cluster of Galaxies

Image data: 5651 x 3178 pixels, 1.960 MB
File: 2020-01-02-1730utc-virgocluster-750mm-30s-iso3200-50x-20drk-aguide-atlas.jpg

Image Data

My first autoguiding attempt with a poor result (elongated stars), perhaps because of a loosely sitting T-ring, more likely collimation causing a bent optical axis.

Date: 2020-01-02	Time: 17:30 UTC
Mount:	Orion Atlas EQ-G
Telescope:	Sky-Watcher BKP150 (Ø150mm/FL=750mm)
Barlow/Reducer:	1x Native (eff FL = 750mm)
Camera:	Nikon D5300 (24.0MP, 23.5 x 15.6mm, 3.92µm)

Image size: 5651 x 3178 px
Image scale: 1.078"/px
Image FOV: 1.69 x 0.95°

Exposure: 30 sec | ISO3200 | f/0
Lights: 50, integration: 0h 25m 00s
Image is not drizzled

Upload date: 2019-05-25 ID: 61

NGC 5128 Centaurus A

Image data: 3000 x 1685 pixels, 1.975 MB
File: 2019-05-23-n5128-750-20s-1600-35x.jpg

Image Data

'Centaurus A', NGC 5128 in Centaurus on May 23, 2019. A stack of 35 exposures 20 sec each @ISO1600 with a Nikon D5300 through a Sky-Watcher BKP150 Newtonian at 750mm in prime focus, no filters. Image cropped to 3000 pixels wide, FOV width is 0.9°.

Date: 2019-05-23	Time: 00:00 UTC
Mount:	Orion Atlas EQ-G
Telescope:	Sky-Watcher BKP150 (Ø150mm/FL=750mm)
Barlow/Reducer:	1x Native (eff FL = 750mm)
Camera:	Nikon D5300 (24.0MP, 23.5 x 15.6mm, 3.92µm)

Image size: 3000 x 1685 px
Image scale: 1.078"/px
Image FOV: 53.90 x 30.28 arc min

Exposure: 20 sec | ISO1600 | f/0
Lights: 35, integration: 0h 11m 39s
Image is not drizzled