The California Nebula is an emission area located in constellation Perseus. It appears to resemble outlines of State of California on long exposure photographs, like this one. It has a very low surface brightness and it's very difficult to observe visually. Distance from my hometown Oulu, Finland, is about 1000 light years.

Technical details

Processing workflow

Image acquisition, MaxiDL v5.07.

Stacked and calibrated in CCDStack2.

Deconvolution with a CCDStack2 Positive Constraint, 33 iterations, added at 50% weight

Color combine in PS CS3

Levels and curves in PS CS3.

Imaging optics

Tokina AT-x 300mm f2.8 camera lens

Mount

10-micron 1000

Cameras, filters and guiding

Imaging camera Apogee Alta U16 and Apogee seven slot filter wheel

Guider camera, Lodestar x 2 and an old spotting scope of Meade LX200

Astrodon filters,
5nm H-alpha 3nm S-II and 3nm O-III

Total exposure time

H-alpha, 7 x 1200 s, binned 1x1 = 2 h 20 min.
O-III, 2x 1200 s, binned 2x2 = 40 min==

Copyright: J-p Metsavainio

NGC 6811 is the cluster of weak stars in the left part of the image, though the bright stars in the upper right corner are more prominent.

Trumpler classification: IV 3 p
Stars: 70
Size: 13'
brightest Star: 9.9 mag

Telescope / Camera: LACERTA Newton 10"/f4 / Moravian G2 8300 mono
Exposure: L/R/G/B 4h 50min

Location: Inzersdorf im Kremstal / Austria

Copyright: Herbert Walter

This image is composed of 3 tiles, in it we can see several nebulae, including the cone nebula, the fox fur nebula and the cumulus of the Christmas tree. This area is located in the constellation of Monoceros, about 2700 light years from Earth.
This image consists of 35 images in Ha from 900" to bin2 x3 and 10 to 900" for OIII and SII to bin2 x3.
Equipment:
Telescope RC10 Truss GSO
Camera CCD Atik16200
Mount Mesu 200
Set filter narrowband Baader 2"
Camera guide Lodestar x2
Guidding with OAG by TS

Copyright: Juan Ignacio Jimenez cuesta

TSA 102 f/6
AZEQ6
CCD Atik One 6
Guiding : Atik OAG + Atik GP
Astronomik Filters

L : 8h15
RGB : 1h45

Processing : Pixinsight + PS

Copyright : Jean-Baptiste Auroux

Telescope: Newton GSO 250MM F/4.9
Sensor: CCD MORAVIAN G2 8300
Mount: Neq6
OAG: Ts D-King
Guide Camera: Lodestar
FilterWheel: Starlight Xpress

COPYRIGHT: Fabio Mortari

January 30, 2020                   

Location: New South Wales, AU      

Telescope: RCOS 12.5 inch F9    

Camera: SBIG STXL11002 with AOX    

Mount: Paramount ME II             

Ha: 22x30 minutes (binned 1x1)     

OIII: 20x30 minutes (binned 1x1)   

RGB: 14x2 minutes each (binned 1x1)



Copyright: Bernard Miller      

Image Description and Details : Description – Just north of Orion’s Belt lies this beauty, Messier 78, with a hint of barnard’s loop in the top left of the frame. A reflection nebula approximately 1500 ly away, this is a Target I’ve wanted shoot for a long time. See my Facebook page for capture details!

Location/Date – Deep Sky West, December 2017

Imaging System – Astrophysics Riccardi-Honders 305, Astrophysics 1600, SBIG STX-16803, Astrodon Gen 2

Exposure – LRGB, 13.1 hours

Processing – Pixinsight

Credit/Copyright – Good Astronomy

WeBo 1 is a recently discovered planetary nebula that is just emerging. A distinct oval-shaped disc of glowing gas forming around a binary star system, it was only discovered in 1995.
Borg 107mm refractor at 420mm focal length and f/3.9. Hobym Crux 170 mount with QHY367C camera, with Triad Ultra narrowband filter. Off-axis-guiding with ASI290mm-mini guide camera, all controlled by Stellarmate.

21x1200 sec subs, all calibrated with flats, darks, and bias frames and processed with Pixinsight and Photoshop.

Copyright: Gazing Outwards

Captured in a single day

Jupiter and Mars are in color with a 2xBarlow and Venus in UV and Mercury in IR in prime focus (2x enlarged).

Celestron 11" EdgeHD f/10 (f/20 for Mars & Jupiter) ASI290MC AVX mount

Copyright: Eric Sussenbach

This is Part of the Double Cluster imaged during the moon phase so not the best conditions. I may make this a mosaic and capture the other half to complete it. Processing wise I have not really done much just stretched it and a bit of noise reduction and that's it a nice easy one.

Captured by David Wills at PixelSkies, Spain www.pixelskiesastro.com

Red 25x300Secs

Green 34x300Secs
Blue 48x300Secs
8 hours 55 mins in total.

Equipment used:
Telescope: Tec 140 F7
Camera: Xpress Trius SX-694 Mono Cooled to -10C
Image Scale: 0.95
Guiding: OAG
Filters: Astronomik RGB
Mount: iOptron CEM60 "Standard" GOTO Centre Balanced Equatorial Mount
Image Acquisition: Voyager
Observatory control: Lunatico Dragonfly
Stacking and Calibrating: Pixinsight
Processing: Pixinsight 1.8

Copyright: David Wills

Mare Humorum, Gassendi, Hippalus Rille, Montes Riphaeus

Mosaic of two frames. This composition contains many interesting and characteristic formations. Mare Humorum and a wax seal in the north, Gassendi crater. Ditch complexes in the west: Rimae Mersenius, Rimae de Gasparis and Rimae Doppelmayer, in the east: Hippalus Rille and the crater with two "faces" - Hippalus. In the upper corner - Montes Riphaeus, a band of shock artifacts that have recently intrigued me. Below is a lava landscape with hill ranges.

Achromatic Refractor TS 152/900, Barlow Celestron Ultima 2x (F-2270mm), ASI290MM, Baader Halpha 35nm, EQ-ATM, FireCapture v2.6, Autostakket!3 (400/2000), Registax6, Microsoft ICE.

Copyright: Jerzy Łągiewka

IC 410 and surrounding Nebula. With and without stars. Imaged on multiple nights with a total exposure time of 27.8 hours.

Telescope: Takahashi FSQ-106EDX IV
Camera: QSI 683wsg-8
Mount: Software Bisque Paramount MX+
Astrodon Ha: 37x900" -20C bin 1x1
Astrodon OIII: 37x900" -20C bin 1x1
Astrodon SII: 37x900" -20C bin 1x1

Integration: 27.8 hours

Copyright: Craig Patterson

Cederblad 51 is a reflection nebula, which appears divided in two by a cloud of dust in the foreground. Nearby there are some Herbig-Haro objects, indicating recent star formation. Ced 51 is embedded in the large emission nebula GN 05.30.0.

Scope: TAK Epsilon 130ED
Mount: 10micron GM2000 HPS II
CCD: Moravian G2-8300, Baader filters LRGB, Ha
Exposure time: L 19x10 min, RGB 12x10 min per filter, Ha 33x10 min, total 14 h 40 min
4 nights in December 2019

Copyright: Markus Blauensteiner

NEWTON 254
SBIGSTF8300
AZEQ6GT
FILTRE ASTRODON
L-RGB 11H10

Copyright: STEPHAN NICOLAS

Moon 2020-02-03 Copernicus
Telescope C14 F / 22
Camera Camera 5 II L
Capture Sharcap
Stacking Autostakkert
Processed pshop c6
Altamira J24 Observatory
Fasnia Tenerife Canary Islands

Copyright: Quico Hernandez Cabrera

StDr 1 - a possible planetary nebula in the constellation of Taurus, discovered by Xavier Strottner and Marcel Drechsler in November 2019. This is the first time it has been imaged in color. It is extremely faint - and so 1800 second exposures binned 3x3 were necessary.

Astrodon Blue: 17x300"

Astrodon Green: 18x300"

Astrodon Red: 18x300"

Astrodon Lum: 21x300"

Astrodon OIII: 8x1800s bin 3x3

Astrodon Ha: 19x1800s bin 3x3

Total Integration: 20 hours

Captured on my dual rig in Spain.

Scopes: APM TMB LZOS 152 (6" aperture 1200mm focal length)

Copyright: Peter Goodhew

Telescope: TEC APO140FL

Camera: QHY16200A

Mount: 10micron GM1000HPS

Acquisition data:

Integration: 31 hours

Frames: Astrodon 3nm Ha: 62x900" -20C bin 1x1, Astrodon 3nm OIII: 62x900" -20C bin 1x1

Location: Sammamish, WA, United States

SGPro and PHD2

Aug 2019

Processing: AstroPixelProcessor and PixInsight.

Copyright: Alex Pinkin

In this mosaic we can see some sunspots active regions and surrounding solar granulation taken before the current low solar activity. Images was taken from Cremona in northern of Italy through a Maksutov Rumak F20 telescope with an F12 focal reducer, Baader Planetarium ASTF280 astrosolar filter and Baader Planetarium Continuum CWL 540nm filter. Cameras used was I.S. DBK41 and Zwo ASI 224MC. Frames stacked with Autostakkert and processed with Wavelets of registax and Photoshop.

Copyright: Francesco Badalotti

- Perth
- APM107/700 + Riccardi 0.75x Reducer
- KENKO AZ-EQ6GT
- QSI683WSG
- L 1Bin 600sec 13shots / R/G/B 2Bin 300sec shots each

Copyright: KyeongSang Yun

Mount SkyWatcher Star Adventurer.
Digital Camera Canon 60 Da
Lenses Tamron SP 17-50 mm F/2.8 at 50/2.8

Total exposure: 44’ with integration of n. 19 image

Guider: QHY5L-II-M and Mini Borg ED 45
Adquisition: MaximDL
Imaging Processing by Attilio Bruzzone with PixInsight

Copyright: Antonio Ferretti (Photo Acquisition) from Papamoa (New Zealand) and Attilio Bruzzone (Imaging Processing).