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Wiegner's Dragon, M94 - LRGB

Askar Fra 400 · ZWO ASI1600MM Pro · 8.3h

What You Get
Stacked and calibrated Master Light Frames for your individual processing
$0.00 Available for free
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Wiegner's Dragon, M94 - LRGB - Astrophotography Image - stack, Master Light Frames to download - Askar Fra 400 Click to enlarge
Sample processed image

Image Equipment

Telescopes Askar Fra 400
Cameras ZWO ASI1600MM Pro
Mount AM5
Accessories EAF, ZWO EFW 8x1.25" / 31mm, ZWO CAA, Primaluce Lab Eagle 6
CC BY-NC 4.0 - Copy, modify and redistribute the material for any purpose. You may not use the material for commercial purposes.
Personal - Non-Commercial Use
  • Combine, modify, transform purchased files.
  • You may distribute modified images as JPG/PNG etc. on any websites (e.g. Facebook, Astrobin, Flickr)
  • Make prints created by purchased images for personal use.
  • You are granted non-transferable, non-exclusive and perpetual image license for personal use.
Prohibited activities:
  • Source files (FITS) may not be made available by you for public download or shared to anyone.
  • You are forbidden to relicense, resell make sub-license or redistribute purchased source FITS files.
What exactly am I buying?
Master Light Frames. Raw astronomical data captured by the camera. Already calibrated, registered and stacked light frames ready for processing in software like PixInsight. Files have FITS extension. Product description above explains how many light frames are included. For example: for typical LRGB image you will receive separate files for R, G, B and L channel (4 files).
How are those files calibrated and stacked?
We use the newest version of PixInsight software and WBPP script standard process with Local Normalization applied.
How do I purchase Image?
We work as any other standard on-line store. Simply add the image to the cart, provide your personal data for the bill/invoice and pay for the order by Credit Card - Payments are handled by Stripe (currently only one acceptable payment method).
I am not satisfied with the purchase
All files are carefully checked but if you're not satisfied - just write us within 14 days from purchase and we will make a refund. We only require that after the refund you delete all purchased files.
What You Get
Stacked and calibrated Master Light Frames for your individual processing
$0.00
Available for free
S
acquisition by Steven Scott
Total acquisition time
8.33h
Location
Nova Scotia, Canada
Night sky quality
Bortle 4
Acquisition date
2025-05-14 - 2025-05-15

Image Set Frames

Target: NGC 4736

Croc's Eye Galaxy, M 094, M094 — 8.33h total integration
Object page

Print Screen of Master Light from PixInsight STF AutoStretch

Wiegner's Dragon, M94 - LRGB - STF Preview - Askar Fra 400 Click to enlarge
CC BY-NC 4.0 - Copy, modify and redistribute the material for any purpose. You may not use the material for commercial purposes.
Personal - Non-Commercial Use
  • Combine, modify, transform purchased files.
  • You may distribute modified images as JPG/PNG etc. on any websites (e.g. Facebook, Astrobin, Flickr)
  • Make prints created by purchased images for personal use.
  • You are granted non-transferable, non-exclusive and perpetual image license for personal use.
Prohibited activities:
  • Source files (FITS) may not be made available by you for public download or shared to anyone.
  • You are forbidden to relicense, resell make sub-license or redistribute purchased source FITS files.
What exactly am I buying?
Master Light Frames. Raw astronomical data captured by the camera. Already calibrated, registered and stacked light frames ready for processing in software like PixInsight. Files have FITS extension. Product description above explains how many light frames are included. For example: for typical LRGB image you will receive separate files for R, G, B and L channel (4 files).
How are those files calibrated and stacked?
We use the newest version of PixInsight software and WBPP script standard process with Local Normalization applied.
How do I purchase Image?
We work as any other standard on-line store. Simply add the image to the cart, provide your personal data for the bill/invoice and pay for the order by Credit Card - Payments are handled by Stripe (currently only one acceptable payment method).
I am not satisfied with the purchase
All files are carefully checked but if you're not satisfied - just write us within 14 days from purchase and we will make a refund. We only require that after the refund you delete all purchased files.

Customer Reviews

Real feedback from astrophotographers who bought and processed our data

5/5
Based on 33 verified customer reviews
M
mark
2026-09-11
Verified purchase
The quality of the data downloaded from Astrophoto was of good quality. It appears that the servers can only upload data at about 10Mbps, so my download speed was restricted to that value. Based on my exploration of the site, the value for the data within is quite good.
F
frans
2026-08-23
Verified purchase
Good quality! And for me it's just great, since being on a low budget, that I can download files for practicing the world of editing Astro-Images.
M
mike
2026-08-21
Verified purchase
Quality data in the download. The download process is easy and without issue. I am enjoying the service you provide. Thanks
S
steven
2026-08-10
Verified purchase
Good data. Wadw Tubman is a beast.
G
george
2026-07-18
Verified purchase
Generally good quality image and from my experience the subscription is a good value. I always align and crop the downloads to avoid any edge issues during gradient removal. Chris has always been very responsive to questions. Recommend!
S
steven
2026-07-01
Verified purchase
The files were fun. Makes for cloudy nights a bit more bearable. I pist my processing on facebook and always give y'all credit. I have given you good advertising.
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C
chris
2026-06-30
Verified purchase
Thanks I have quite a few data sets waiting but the ones I have processed have been excellent. I do not yet put any iimage on line as I have had many health issues and difficulties with software and hardware. I am a 73 year old learner with defective colour vision and barely 3 months using PixInsight and Photoshop cc so it is as steep for me as it is difficult to see stars in my letterbox of Bortle 7 city sky…
J
james
2026-06-09
Verified purchase
This is a wonderful data set, quite fun to process and I'm very pleased with the results I got from it.
E
edwinbarreto58
2026-06-07
Verified purchase
Excellent way to practice using Siril.
S
seve
2026-05-25
Verified purchase
Great platform, very appreciative of those who supply the raw data for practice. Thank you 💫
J
james
2026-05-07
Verified purchase
This was a fun image to process, especially since I had never worked with the Askar D2 filters before. One thing to note is that the three files are not quite star-aligned correctly, so be sure to do that first before processing these data yourself.
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D
david_pastern
2026-05-06
Verified purchase
Quality data, large choice. Easy to register and use the site. Highly recommended.
R
rick
2026-04-19
Verified purchase
Excellent data set. It will be very easy to process.
R
rick
2026-03-28
Verified purchase
Very happy with the data. Highly recommend AstrophotoMarket!
D
dominic
2026-03-28
Verified purchase
Enjoyed processing this data set in HSO. High quality data.
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T
tony
2026-03-27
Verified purchase
The data available is excellent, and pricing is very reasonable. The administrator of the site is very responsive.
T
thomas
2026-03-24
Verified purchase
I'm getting to grips with PixInsight and needed some real world data files. Astrophotomarket seemed to be the best choice and recommend.

I can say I definitely made the right choice for data files.

Not ready to publish yet but will do so as soon as I can.
G
giuseppe
2026-03-22
Verified purchase
Nice photo!
P
paul
2026-03-19
Verified purchase
Excellent dataset
E
emanuele
2026-02-28
Verified purchase
Fantastic files! Great details!
B
bernard
2026-02-21
Verified purchase
Tres satisfait des masters images / Very satisfied with the master images
B
bob
2026-02-10
Verified purchase
Note I’ve only processed one of the images so far and it was absolutely beautiful to work on. M17 The Omega Nebula
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R
robert
2026-02-09
Verified purchase
Mega. High-quality files - I recommend
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D
dave
2026-01-24
Verified purchase
Very nice quality Masterlights.
View Publication
R
robert
2026-01-08
Verified purchase
Super-mega :)
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B
bob
2025-12-26
Verified purchase
Really enjoyed the quality of the file’s - my images are all OSC so working with true narrowband is quite nice! Kudos to Astro photo market!
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M
maupetit
2025-12-20
Verified purchase
La qualité des images est vraiment très bonne.
Quand la météo est mauvaise, comme chez moi depuis des semaines, c'est vraiment un plaisir de pouvoir s'entrainer avec ces données.
Je recommande !! //English: The image quality is really very good.
When the weather is bad, like where I live and it has been for weeks, it’s truly a pleasure to be able to practice with this data.
I highly recommend it!
C
chris
2025-11-10
Verified purchase
Great data. I am a PixInsight newbie but have 6 months of astrophotography experience courtesy of Seestar. Once I workrd out how to process the mono narrowband files I was able to produce a very acceptable image. I think. It isn’t goung on line but I printed it for my collection. Thank you! Chris Williams UK.
B
brian
2025-09-19
Verified purchase
Great DATA, I RECOMMEND 100%
G
george
2025-08-22
Verified purchase
I could not be more pleased with this, my first purchase of data sets from AstrophotoMarket.com. To begin, I found the website easy to navigate and replete with the information I needed to make an informed purchasing decision. Payment was quick and easy, and the data sets became available for download promptly after I made payment. As for the quality of the data, it matched my high expectations. Processing the data sets was a pleasure, and I am thoroughly satisfied with the resulting images. I am certain that I will be availing myself of AstrophotoMarket.com data in the future.
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G
george
2025-08-18
Verified purchase
I've processed several data sets from AM. The data has always been good. The site offers several free data sets that can be used to assess the quality of the data. Prices are generally reasonable. Recommended!
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B
brian
2025-08-08
Verified purchase
i recommend this data , Hight quality
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R
robert
2025-04-17
Verified purchase
Great data, highly recommended :)

About this dataset

This LRGB dataset captures NGC 4736, also known as the Croc's Eye Galaxy, across two nights in May 2025. The acquisition comprises 250 total frames through luminance, red, green and blue filters, each exposed for 120 seconds, yielding 8.3 hours of total integration time. Imaging was performed with a ZWO ASI1600MM Pro monochrome camera paired with an Askar Fra 400 telescope on an AM5 mount. The luminance channel received 126 frames, while the colour channels collected 40 red, 41 green and 43 blue exposures. This spiral galaxy in Canes Venatici presents a bright nucleus surrounded by complex ring structures, making it a rewarding target for intermediate imagers. The dataset is available as a free download under a Creative Commons BY-NC 4.0 license, permitting copying, modification and redistribution for non-commercial purposes.
Generated from the dataset's metadata; the author's description above is authoritative.

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