Astrofriend's homepage

www.astrofriend.eu
Share: Twitter Reddit Facebook Gmail Gmail Email
Search Astrofriend's homepage:

Valid CSS!

All pages shall now have been validated

Info Cookies (Kakor) / GDPR

Navigation

Advertisement /
Annons:

Project News

Advertisement / Annons:

Galaxy
NGC 2403, Caldwell 7


Object : NGC 2403, Caldwell 7 Galaxy
Coordinates/Direction : RA: 07h36m, DEC: +65o36'
Object size : 22' x 12'
Object magnitude : 8.9
More to know : Wikipedia:
https://en.wikipedia.org/ wiki/ NGC 2403

NGC 2403, 2024-09-14

Galaxy NGC 2403 long exposure, Pentax 645 FA 300 mm ED, 2024 (Click on the image and get the full resolution one in a new window)
Date : 2024-09-14
Time (UT) : 22:04 - 23:06
Mount : SkyWatcher EQ6 Pro, beltdrive modified (DIY 2019)
Guide : ASI120 camera with off-axis
Lens/telescope : Pentax 645 FA 300 mm ED f/4 (medium format lens)
Corrector/Barlow : -
Field (FOV) : 6.8x4.5o (full frame) before crop
camera : Nikon D800, QE=0.56, full frame, 36 Mpixel, 14 bit
camera temperature: - , no temperature sensor
Film/CCD : Raw, NEF
Filter : none
Control system: Mount, camera, focus, guide (Ekos) controlled by KStars/Ekos Linux, 64-bit
Exp. time : 59x60 seconds, iso400, dithering every 3th
Image process tool : Siril, Gimp, Irfanview
Processing : flat, photometric color calibration
Weather : clear sky, temperature +14o C
Site : Sweden, Stockholm, Hagsätra. Bortle 9
Free view Az: 20o to 90o, 165o to 185o, Alt: 20o to 55o
Comment : One more image with the Nikon D800 camera and the Pentax FA lens.

NGC 2403 long exposure, 2023-10-04 to 2023-10-12

Galaxy NGC 2403 long exposure, Pentax 645 300 mm ED, 2023 (Click on the image and get the full resolution one in a new window)
Date : 2023-10-04 to 2023-10-12
Time (UT) : -
Mount : SkyWatcher HEQ5, belt modified, low rider
Guide : QHY5 camera with 200 mm f/3.5 lens
Lens/telescope : Pentax 645 300 mm ED f/4 (medium format lens)
Corrector/Barlow : -
Field (FOV) : 6.8x4.5o (full frame) before crop
camera : Canon 6D, QE=0.5, full frame, 20 Mpixel, 14 bit
camera temperature: About 6o C above surrounding temperature
Film/CCD : Raw, Cr2
Filter : none
Control system: Mount, camera, focus, guide (Ekos) controlled by Astroberry (KStars/Ekos Linux)
Exp. time : 154x60 seconds, iso1600, dithering mode
Image process tool : Siril, Gimp, Irfanview
Processing : crop, resize, level, cal dark, bias, flat, photometric color calibration
Weather : clear sky
Site : Sweden, Stockholm, Hagsätra. Bortle 9
Free view Az: 20o to 90o, 165o to 185o, Alt: 20o to 55o
Comment : A new attempt with 2.5 hours exposure from three nights to bring the noise down. Better but far from okay.

NGC 2403 2023-10-05

Galaxy NGC 2403, Pentax 645 300 mm ED, 2023 (Click on the image and get the full resolution one in a new window)
Date : 2023-10-05
Time (UT) : 21:07 to 22:22
Mount : SkyWatcher HEQ5, belt modified, low rider
Guide : QHY5 camera with 200 mm f/3.5 lens
Lens/telescope : Pentax 645 300 mm ED f/4 (medium format lens)
Corrector/Barlow : -
Field (FOV) : 6.8x4.5o (full frame) before crop
camera : Canon 6D, QE=0.5, full frame, 20 Mpixel, 14 bit
camera temperature: About 6o C above surrounding temperature
Film/CCD : Raw, Cr2
Filter : none
Control system: Mount, camera, focus, guide (Ekos) controlled by Astroberry (KStars/Ekos Linux)
Exp. time : 60x60 seconds, iso1600, dithering mode
Image process tool : Siril, Gimp, Irfanview
Processing : crop, resize, level, cal dark, bias, flat, photometric color calibration
Weather : clear sky
Site : Sweden, Stockholm, Hagsätra. Bortle 9
Free view Az: 20o to 90o, 165o to 185o, Alt: 20o to 55o
Comment : A new attempt at a night without the Moon. I really need my bigger refractor for this object. There ore other objects, even smaller to examine in the full resolution image. Have a look here at the plate solved image: NGC 2403 Astrometry plate solved.

NGC 2403 2023-09-30

Galaxy NGC 2403, Pentax 645 300 mm ED, Sweden 2023 (Click on the image and get the full resolution one in a new window)
Date : 2023-09-30
Time (UT) : 20:31 to 21:46
Mount : SkyWatcher HEQ5, belt modified, low rider
Guide : QHY5 camera with 200 mm f/3.5 lens
Lens/telescope : Pentax 645 300 mm ED f/4 (medium format lens)
Corrector/Barlow : -
Field (FOV) : 6.8x4.5o (full frame) before crop
camera : Canon 6D, QE=0.5, full frame, 20 Mpixel, 14 bit
camera temperature: About 6o C above surrounding temperature
Film/CCD : Raw, Cr2
Filter : none
Control system: Mount, camera, focus, guide (Ekos) controlled by Astroberry (KStars/Ekos Linux)
Exp. time : 60x60 seconds, iso1600, dithering mode
Image process tool : Siril, Gimp, Irfanview
Processing :  cal bias, flat, photometric color calibration
Weather : clear sky, Moon
Site : Sweden, Stockholm, Hagsätra. Bortle 9
Free view Az: 20o to 90o, 165o to 185o, Alt: 20o to 55o
Comment : Last September the spiral galaxy NGC 2403 was in correct position for a photo. It's an outlaying member to the M81 group. It's a small galaxy for my wide angle optic of 300 mm.
Go Back to content

Go Back

Advertisement / Annons: