Part of M45 nebula & the star Merope where also the gost of Merope is shown :-)

The observer, summer, july 2022, me :-)

Welcome to my astro homepage, which have one purpose only, to show and share with you my best astro pictures mainly taken by me & from Amager, Copenhagen, Denmark.


CS Niels V. Christensen

E-mails to reach me, main e-mail address:   

Alternative e-mail addresses:  , or

Feel free (anybody) to contact me on:
TEST IMG WF IC-410 color IMG from Avnoe DK, temp. ver.
TEST IMG WF Abell 33 color IMG,
TWO TEST IMGES Febr-2022, Heart Nebula in Ha,
Now with colors,
Oct-2021, a trial SQ color IMG,
Oct-2021, Helix Nebula, a trial color IMG,
Dec-2020. Telescopius link, please check, thanks,
Nov-2020. Upgraded one of my obs-PC´s to a OnLogic K700se model. Configuration like this, i7 CPU, 32GB RAM, 4 SSD HDs app. 460GByte free space for data storage, 6 USB3 connections, 2 BIOS programmable serial ports, in this case, set to pure RS-232 mode. Unit specified to temp. rage: -40 -> 70 degrees C.
Latest news, joined AB again 26 Sep-2020, please have a look,
Sep-2022, a collection of astronomy and space related learning games and activities for kids,
Mar-2022, why not take a look at, Space: The Best Games & Resources
Febr-2022, please check this one out, "Astronomy Resources for Kids" :-)
An an informative guide on stargazing, please check it out, thanks,
Please check this out if your interested in constallations mythology, thanks,
A couple of astronomy related web-sites, please check them out, thanks,
Have you heard of Garden Astronomy?
I can recommend all to read more here, thanks a lot :-)
A comprehensive guide for people starting to learn about Astronomy, Science and a Physics Guide for 2020, please check below link, thanks a lot,
Detailed guide on back garden astronomy, please check it out, thanks a lot,
Please check out this great link about astronomy related topics, thanks a lot,
Another great place to start if you have a passion for "what is out there" :-)
Astronomy for Kids, please have a look,
How to Get Started With Astronomy While on a Shoestring Budget,
Please note that all pictures are copyrighted to Niels V. Christensen, if not otherwise stated.
Any content on this website must not be reproduced without authors permission.
The light pollution map from where I take my astronomical images, Amager CPH, Denmark,
12. Jan-2021, few M42 Nebula subs/frames taken with 16" F6.2 SCT, Baader 36mm RGB filters & a ZWO asi1600MM camera,
22. Sep-2020. A NGC7331 RGB Galakse image. In total 78x120sec exposures. EQ: 16" ACF SCT F6.2, Baader 36mm filters, ZWO 1600MM cool camera, temp. -15C.
22/23. Sep-2020. Stephan's Quintet, a LRGB Galaxy image. In total 9x300sec exposures.
M39, a open star cluster image, 
Another open star cluster image, NGC 457, the Owl Star Cluster. Total exposure RGB: 151x30sec 
7->8 og 14 Aug-2020, a NB(Ha/OIII) bicolor image of NGC6781, a planetary nebula. Total exposure: Ha/OIII: 2x16x300sec. RGB: 59x60sec,
7/8 Aug-2020, a planetary nebula image of NGC6781. Total exposure app. 2 hours. It's a RGB, Ha, OIII image, 
7/8 Aug-2020, a widefield NGC6781 planetary nebula image. Total exposure: 81x60sec. EQ used: WO FLT-110 F7 refractor, ZWO asi071MC pro cool camera & 4 pcs 2" filters used,
1. Aug-2020, IR pass image of the planet Saturn, standing low in the horizon in CPH, DK,
A Albireo image, raw data from 2013 and 2020,
A RGB image of the double star Albireo, taken with long FL, 
July 2020, EQ. update, a losmandy dovetail, FFC setup to increase the FL, take a look,
Comet C/2020 F3 NEOWISE, a mix image from 3 nights in July-2020,


Comet C/2020 F3 NEOWISE, CPH Amager, taken from my backyard around midnight 17/18 july-2020. Stacksize: 30x2sec, ISO1600. Canon 60Da and SamYang 135mm F2.8,

Comet C/2020 F3 NEOWISE, CPH Amager Beach area looking north, 9. July-2020,

A Gif sequence, 10 images in a row,

The Comet C/2020 F3 NEOWISE taken 10 July-2020, 00.18, stack of 19 images,

Panorama, a banner NLC, comet C/2020 F3 NEOWISE view,

24. June 2020. Another Moon image (than the above) taken 10.45pm, and here was used another objektive, the SamYang 2.0/135mm. Exposure settings: 1/25 sec, ISO400,

7 -> 8 June-2020. M14 star cluster.

A color/LRGB image. Exposure details, LRGB=42x60sec+22x120sec and color subs=41x180sec. 16" SCT F6.2, WO FLT-110 scopes & ZWO asi1600MM & 071MC cameras used, two processing versions shown,

7. June-2020. Moon exposures made 1. June 2020 & 6. April-2020. A creation of an Moon with earth shine floating in space. The used images can be found below,
1. June 2020. Another Moon image shown here taken with a color cam ZWO asi071MC pro & a 110mm refractor, WO FLT-110 F7 and a Baader 2" UV/IR cut filter used. Expo. time moon background: 29x60 sec and a moon SER stack taken with FireCapture, the best 12 % of 1000 frames was used (AutoStakkert x64, drizzle 1.5),
The same moon color AS drizzle 1.5 stack, as shown above, was used for this size 80% image,
1. June 2020. A Moon crater Copernicus.

EQ: 16" SCT LX200ACF F6.2 scope, a FFC, ZWO asi1600MM cool camera and a Baader 36mm UV/IR cut filter.
FC stack size was 1000 frames and the best 12% AS stack was processed in PS CS6.

28 Maj-2020. A Moon matrix image. The FireCapture programme was used and 4x500 frames was recorded. The Autostakkert 22% stacks were used for further processing in PS CS6.
Moon matrix link to size 25%, 
Moon matrix link to size 50%,


In parallelt this/another Moon matrix image was recorded. First part image data:35x0.002 sec + 60x0.004 sec single images stack'ed Autostakkert and second part image data: 6x5.1 sek single images stack'ed in PS CS6. These two parts were merged together in PS CS6.

EQ used: WO FLT-110 mm F7 refractor, Atik Horizon mono camera and a 2" Optolong Ha filter.

A single image taken from my garden  looking in north west direction. The light glow from CPH can be seen. Image data, 26-May-2020 local time: 21.57. Camera expo. time, 1/40 sec, setting ISO2000. Image processing: PS CS6 used first in RAW format then stored on HD as 16 bit tif and here shown in size 25% jpg format. EQ: Canon 60Da & et SamYang 135mm F2.8 objective placed on a small tripod,
4 & 11 May-2020. The M104 Galaxy, a LUM-RHa,G,B image. Total exposure time: Lum=3x300sec+81x60sec+18x30sec, RGB=53x60sec & Ha=4x600sec. EQ: 16" SCT scope F6.2, ZWO asi1600MM cool camera & Baader LRGB, Ha 36mm filters, two processing versions,
M104 Galaxy, all lum frames from above image, here shown as a inverted image,
9-10 May-2020, A M61 LRGB image with SN 2020jfo taken with 16" SCT F6.2 FL ca. 2.5 m, ZWO asi1600MM camera and 36mm Baader LRGB filters. Total expo. time: Lum=14x180sec+25x60sec. RGB in total=24x60sec. Blended into the BG total exposures 45x120sec, taken with a WO FLT-110 F7 refractor, Atik Horizon mono camera, and a IDAS LPS P2 filter,
 A LUM-RHa-G-B image of the Galaxy named M94. The Galaxy is more reddish than usual due to 40min of Ha info blended into the red CH. Exposures taken 21->23 April 2020. Total exposure time: 6.33 hours. Shown here is latest modified version :-)
A LRGB/color image of the Galaxy named M64. Exposures taken 18->20 April 2020. Total exposure time: 4.33 hours. Gear used: 16" SCT ACF F6.2 scope FL app. 2.5m. ZWO 1600MM and 071MC pro cameras. IDAS LPS-P2 2" filter & Baader LRGB filters.
A Moon matrix BW image from 4. April 2020. It consist of more that 500 single images quality sorted, best 11% of each stack, and stacked in AutoStakkert, merged together in PS CS6. Gear used: 16" SCT ACF F6.2 scope, ZWO 071MC pro camera, 2" UV-IR block filter, size66% of full size,
Copyright Niels Haagh/Niels V. Christensen.
M101 Galaxy color image, total exposure time app. 25 hours. This image consist of below two M101 Galaxy images merged together in PS,
Copyright Niels Haagh/Niels V. Christensen.
M101 Galaxy color image from March/April 2020, total exposure time app. 12 hours. Gear used: Mount, TTS-160 Panther, TEC 140 F7 refractor, Canon 1100Da camera & a Atik 460EX mono camera. Baader LRGB, Ha filters. RAW image data taken/provided by Niels Haagh,
Copyright Niels V. Christensen.
M101 Galaxy color image from 2016, total exposure time app. 13 hours. Gear used: Mount, a Baseunit on a wedge, 16" SCT LX200ACF F6.2 scope, WO FLT-110 F7 refractor, Canon 60Da camera & Atik 460EX mono camera. Baader LRGB filters,
Current astro-setup/gear remotely controlled using chrome remote desktop, a great tool :-)
A Moon mosaics image taken 5 April-2020. Gear used: 16" SCT F6.2, FL app. 2.5m, ZWO 071MC camera & a Baader 2" UV-IR block filter. 7% of 6x500 frames used from Firecapture. Autostakkert & PS used for the processing part. Two image versions.
6. April-2020. A Moon image taken 6 April-2020. Gear used: WO FLT-110 refractor, ZWO 1600MM camera & a 2" IDAS LPS-P2 filter. 7% of 2000 frames used from Firecapture. Autostakkert & PS used for the processing part. Two processing versions.
Just to compare with this 16" SCT, ZWO1600MM image. A slice Moon image, high resolution 16bit tif image, an old moon image taken years ago :-)
A Venus, Seven Sisters/M45 color image taken 3. April-2020. Gear used: Small tripod, Canon 60Da camera & a SamYang 135mm objective,
A Moon color image taken 3. April-2020. Gear used: Small tripod, Canon 60Da camera & a SamYang 135mm objective,
A NGC4565 Galaxy image. It's made from a luminance and a color stack,
A NGC3628 Galaxy image. It's made from a luminance and a color stack,

M1, the Crab Nebula, taken 19. Jan-2020. It is composed as a Luminance / Bi-color NB image,
A Super Moon handheld/color image taken 9. March-2020. Gear used:Canon 60Da camera & Samyang 135mm objective. Camera settings ISO6400, exposures from 1/8000sec to 1/250sec.
M42 C9.25 Hyperstar setup, Panther TTS-160 mount, ZWO 071 Color Camera. Subs taken & pre-processing done by Mr. Niels Haagh. Final processing done by me. Total exposure: 20x120sec, a rgb-starless++ image,
Panther TTS-160, C9.25 hyperstar setup/gear,

M42 Hyperstar org. image blended with the streched starless image above,

Below HH Hyperstar setup subs  taken & pre-processed by Mr. Niels Haagh.
Final processing done by me. Total exposure time: 33x120sec,
Horsehead starless image. Starless++ & PS used,

Horsehead starless image enhanced & combined with org. image. Combined in PS with a lighten layer,
Horsehead drizzle image,  a PI SubFrameSelector w. weight factor, StarAligned & ImageDrizzle/Combined color image,

The Horsehead color image PI SubFrameSelection screen dump,
Below M51, M1, NGC4631 subs/images taken with 16" SCT, ZWO 1600MM Pro camera / Atik Horizon camera & Baader filters. All processing done by me.

M51 BW image, PI processes used are the same as mentioned above, 
The M51 BW image PI SubFrameSelection screen dump,
M1, the Crab Nebula. It is composed as a BW image where I have used some PI processes, the same as mentioned above.
It's an integration of 584 single images. Now merged with old color data from 2019 & 2020,
M1, the Crab Nebula. It is composed as a BW image where I have used some PI processes, the same as mentioned above,
It's an integration of 584 single images,
The M1 BW image PI SubFrameSelection screen dump,
NGC4631, the Whale Galaxy. It is composed as a BW image where I have used some PI processes, the  same as mentioned above .
It's an integration of 324 single images here merged with old color data from 2017 & 2018,
The Whale galaxy PI SubFrameSelection screen dump, 

The Org. M42 Hyperstar image taken & pre-processed in PI by Mr. Niels Haagh, final processing done by me,
Please visit this astro exhibition if your nearby Tårnby Hovedbibliotek, Amager CPH, DK, thanks a lot, (no longer available),
New astro web site, still under development/construction, seem to be never ending story ;-)
Update: After I decided to quit Astrobin 17. Febr-2020, I will ramp-up my effort in the web-tool, investigate more/further in what the WebBuilder program can do for me :-)
My AB metrics from 17. Febr-2020, just to have them here,

Primary Image uploads: 260. Followers: 504. Followed: 1236. Number 13 on the trending astrophotographers top 100 list. Two IOTD & nine TP images. 29200 Liked images

29->30 Nov-2019, a Nebula in Ha, SH2-188. Total exposures: 45x300sec,  

IC-410 Nebula, a Bi-color Ha, OIII image. The image was taken in my front yard in CPH, DK,

IC-410 Nebula with the amazing Tadpoles. An Ha image taken in my front yard in CPH, DK. Total Exposure time: 42x300sec.

M82 MlC, NVC combi ver. close-up,

M82 MlC, NVC combi ver. More WF,

M87, INV & BW,

26 May 2019, a M27 Nebula color mix image,

18. April-2019, a M51 Lum/UHC picture,

18. April-2019, a Moon picture,

16. April-2019, M87, a Lum/UHC picture, exposure: 85x60sec+95x30sec, and a color image,

6. April-2019, M51 Brorfelde 12" refractor, 69x300sec Lum data added with old color data,

18. Sep-2018 & 15. Dec-2015, NGC 891, a LRGB picture,

18. Sep-2018, NGC 457, a LRGB picture,

5. & 6. Sep-2018, M31, the Andromeda Galaxy L,RGB picture,

2. & 3. Sep-2018, M31, the Andromeda Galaxy, a WF color picture,

9. Aug-2018, NGC6826 Nebula, combined LRGB & NB subs from 2015->2018,

21. Aug-2018, Comet Giacobinni-Zinner,

13. Aug-2018, Comet Giacobinni-Zinner,

17. Aug-2018, homemade astro-barndoor ready for some action :-) 

8. July 2018, M27, a summer Lum/old color picture,

20,21,22 April 2018, NGC 4631, a LArtL-RHa,GOIII,BOIII picture, 2 versions,

11. April-2018. M51 Galaxy picture shown in Hubble palette colors,

2018. Latest version of the crowd image of M81 Galaxy, a LRHaGB picture, two processing versions shown here,

20/23 March 2018, a M63 LRGB picture, close-up view,

The M63 Lum master file is here,

7. March 2018. Televue blog, please check out this link,

Latest version of NGC 1333 is here,

8. Febr-2018, M1 taken once again in freezing temperaturs,  

M1 shown in Hubble palette colors here: 

7 -> 8 Jan-2018 at Brorfelde, IC443, a Lum/Ha BW picture. Total exposure time: 2x19x300sec.

Added a IC443 Tone-Mapped Ha and Lum version as the second picture link.      

Same night at Brorfelde. NGC 1333, a Lum picture. Total exposure time: 39x300sec.

Same night at Brorfelde. NGC1333, a Lum-color picture. Total exposure time: 39x300sec Lum and color exposure time: 47x120sec. More info. can be found here:      

Oct-2017. The Atik Horizon beta camera setup is shown here:

25-26 Nov-2017, a Horsehead Nebula, HaL-RGB WF picture,

6. Nov-2017, the portable setup used with Canon 60Da and a x2 extender. A single moon picture, ISO 100, exposure 1/25 sec,

M76 subs/frames taken during two nights, 21-22 Sep-2017 and in the moon light 9-10 Oct-2017. It is composed as a LUM-Ha-OIII master layer combined with color layers, RHa, GOIII and BOIII.

7. Ock-2017. M27, a Lum-Ha/OIII bi-color picture.

Atik Horizon beta camera, a 16" SCT F6.2 scope, Baader 36mm filters used to make a Lum,Ha, and OIII bi-color picture of M27. Total exposure ~2.3 hours.

Portable equipment, 2017. Mount: TTS-160 Panther. Scope: TV NP127is F5.2. ZWO asi1600MM camera. Baader L, R,G,B, Ha, OIII and SII 36 mm filters.

Sep-2017. M33, a LumHa-RHa,G,B Picture. Frames taken during Sep-2017. Exposure details: Lum=117x60sec+23x300sec. Ha=33x300sec. RGB each channel 20x60sec., 3 processing versions,     

18. Sep-2017 in the early morning and as said in the header text, seasons first M42, taken with the portable setup. No calibration frames was used and the total Lum exposure was: 6x60sec+9x30sec+20x10sec,

17. Sep-2017, latest M31 Lum - color version,

28. Aug-2017, tried to use all Cocoon Nebula LRGB frames as a Lum layer. Please check out the result here, 2 versions,     

The "LRGB frames=artificial Lum master frame" is here. As it can be seen I will have to make a flatbox to get rid of the vignetting, but for now I have used gradientXterminator instead,

26. Aug-2017, decided to add 7x2min Lum exposures (portable equipment) + 37x2min exposures (old subs via WO FLT-110, Canon60Da) to the shown Cocoon Nebula picture below, making it a ~11 hours expoused picture!

22-23. Aug-2017, two nights using the shown portable equipment, plus the 16" SCT closeup L & Ha data of the cocoon itself, it adds up to ~9.8 hours of total exposure of the Cocoon Nebula. It is composed as a LRHaGB picture, shown are a size 33% and a size 50% picture,    

13. Aug-2017. First light with a portable setup. A M31 Lum picture taken from my backyard. Total exposure time 1.5 hours. Subs from 30 sec. to 120 sec.,

A Ha filter and TTS-160 Panther mount test done with 3x600sec exposures,

Old color picture of M31 added to the Lum M31 version above (the color FOV don't fully cover the Lum version), 2 different versions,

10. July 2017, a M27 WF OIII/Lum picture, ~3.2 hours in total exposure,

10. July 2017, a M27 OIII/lum picture, ~1.5 hour in total exposure. The individual frames were taken in/on a full moon sky & in the usual light polution from the main capital of Denmark, Copenhagen,

2. July 2017, a section of the moon, just a single Ha picture! The best one I have taken so far, that is called "lucky imaging". Picture size is 80%,

2. July 2017, a moon picture, put together as a matrix of single moon pictures, using the same photo setup as described below,

2. July 2017, a section of the moon taken with a 16" SCT, Atik 460ex mono camera and a Ha filter. It is one single picture enhanced slightly in photoshop, no stacking performed,

21 June-2017. Between the clouds in the sky and in a very bright summer night I was able to get, with my 16" SCT, 12x300sec OIII and 11x300sec Ha subs, now added to the below BW M27 image. On purpose I have moderated the stars in the cropped picture,

21. June-2017. A M27 version with old color info. added (the FOV in color picture was smaller),

18-19 June-2017. The first M27 2017 picture. It is a Lum mixed with Ha info.

5-6-2017. A matrix moon, single pictures, taken with/through a Ha filter. Equipment used: 16" SCT and a ZWO ASI1600MM cool camera,

28-5-2017. Galaxy NGC6946, in total 9.5 hours of exposure. The Ha part was 30x300sec frames stacked and integrated into the red channel, which make it into a Lum,RHaGB picture,

23-5-2017. Latest  color picture version of the Galaxy NGC6946. Changed the color and used the lowest Lum FWHM's stack,

20->21 May-2017. Color data, Ha, R, G and B added. WO FLT-110/Atik 460 ex mono R,G,B exposure = 3x20x180sec. 16" SCT/ZWO asi1600mm cool R,G,B exposure = 3x30x120sec. Ha exposure = 12x300sec.

The 'close-up' picture, ~7 hours of exposure,

Came out observing 19->20 May-2017. A couple of Lum pictures that covers this event: Supernova SN 2017eaw and NGC 6946.

An gif animation, a 'before' and 'after' Lum picture,

and a WO FLT-110, Atik 460ex mono/lum picture,

A close-up Lum merge picture of old and new NGC 6946 frames,

Here I used the best 6% frames of a 20GB SER movie of the Moon. The cropped picture was taken 8 -> 9 May-2017 and the picture size is 100%.

A section of the Moon. The picture was taken 8 -> 9 May-2017. Two sorted stacks of frames were merged together in Photoshop,

NGC 4631 whale galaxy taken 30 April/1 May 2017. A Lum picture. Exposure: 19x180sec. Taken with 16" SCT and ZWO asi1600mm camera.

M101 galaxy taken 30 April/1 May 2017. Exposure: 20x180sec Lum data and taken with my 16" SCT and ZWO asi1600mm camera,

April-2017, my latest photo, a L(20x180sec new raw data),RGB picture of the M101 galaxy, a mix of old & new raw data,

24/25. April-2017, more LRGB raw data was added to the M63 Galaxy Lum picture below,     

22/23. April-2017, the M63 Galaxy, a Lum picture,      

19. April-2017, Asteroid 2014 JO25, time: 23.05 -> 23.07 CEST,

April-2017, NGC 4214 a LRGB Work in Progress picture. Latest revision is shown here and now also public on my astrobin account:     

3-April-2017, a RGB picture of the Moon, 2 versions,     

Mar-2017, a comet 41P-Tuttle-.... Lum pictures,     

Mar-2017, the Crab Nebula, a LUM-Ha-OIII BW picture,

Mar-2017, the Crab Nebula, a Ha-OIII BW picture,

Mar-2017, the Crab Nebula, a Lum-Ha-OIII WF BW picture,

Febr-2017, the M51 Galaxy, a 2014 -> 2017 color WB/NB picture,

15. Aug-2015, a M27 Nebula color image. Copyright, Morten la Cour/Niels V. Christensen. It's a LumRHa,GOIII,BOIII image,

Aug-2014, the 16" SCT scope/tubus front glass view after an cleaning effort. The first cleaning effort in/after 7 years of observation/usage,

12. March-2011, a Moon image,

Old image of the double star Albireo, a LRGB image,

Old images of M97,

Copyright, Niels V. Christensen, 2022.