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Goofi's Imaging Challenge, March 2020 - (IC 410) The Tadpole Nebula

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#1 nmoushon


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Posted 02 March 2020 - 11:00 AM

The March 2020 Challenge is now open. The target is (IC 410) The Tadpole Nebula. To reduce the number of stickies, please submit your entry to this thread.


For those having troubles locating the target here is a post that will help locate near by objects.


The Rules will remain pretty simple:


      Your Equipment

      Your Data, Captured This Season

      Your Processing

      One Entry Per Member

      Only post your FINAL image


To increase participation over such a diverse group, the winner will be selected by random drawing. Please feel free to start a thread requesting guidance on your entry prior to submitting it, the whole purpose of this challenge is to learn and compare on a common target. Entries must be submitted by midnight eastern time on March 31, and I will try to announce the winner sometime on April 1.


Note: If I am late announcing, gently nudge one of the moderators in a private note, it helps. Seriously, PM one of us!


Please display an image in your post, not just a link!!


I hope everyone has fun with this one, and with that,


Let The Games Begin


**Disclaimer** - If the selected winner does not reply and pick a target with-in 3 days of the winner being announced, the Mods will then select the next target.


#2 johnsoda


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Posted 02 March 2020 - 07:36 PM

Well, since I already captured this object as part of December’s challenge and since it’s in a far from ideal position for imaging for me right now, I’ll just resubmit that image, slightly modified.  It was taken “this season”, so it’s legit.  The Astrobin link from the small image does seem to work, although it shows just an hourglass right now.






#3 Der_Pit



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Posted 03 March 2020 - 01:43 PM

Yep, same here: Taken November 22/23 - guess this counts as 'this season'?

Else I'd have to pass, as I'm without telescope at the moment bawling.gif


HaRGB composit.  RGB 30s exposure (102/109/105 subs), Ha 60s exposure (110 subs)  → 4.5h total


A-P Stowaway on CEM60EC, guide ZWO OAG+290MMmini

ASI1600MM-Pro, EFWmini with Astronomics DeepSkyRGB and 6nm Hα

Acquisition: KStars/EKOS/INDI, PHD2

Processing: IDL, StarNet++, GIMP/GMIC


Full size on Astrobin (again wink.gif )



All acquisition and processing in Linux


#4 Swordfishy



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Posted 03 March 2020 - 02:49 PM

Taken November, December, some more HA added last week.


 Losmandy G11 with SiTech Sidereal controller

 Takahashi FSQ 85 Petzval

 300 x 96  Chroma Ha

 300 x 96  Chroma Sii

 300 x 96  Chroma Oiii

 Acquired in NINA Imaging.

 Processed in Pixinsight, finished in Lightroom.


 Full size



Attached Thumbnails

  • 49614939376_cfc56b6cd5_c.jpg


#5 kskostik


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Posted 03 March 2020 - 07:37 PM

Imaging location: NE Ohio, Bortle class 8.
Imaging period:
December 24th, 2019 - February 23rd, 2020
Imaging telescope: Explore Scientific 102mm ED APO triplet FCD100
Imaging camera: QHY183M, narrowband gain 11, offset 13; broadband gain 5, offset 8.
Mount: EQ6 R pro
Guiding telescope or lens: off-axis guider QHYOAG
Guiding camera: QHYIII290C
Focal reducer: Stellarvue 0.8 FF&R
Auto-focuser: Pegasus Astro Focuscube 2
Software: EQMOD, SGP, Sharpcap, PHD2, Pixinsight
Filters: narrowband Astronomik 6nm OIII, 6 nm Ha, 6 nm SII;
Ha: 42 x 600 sec
OIII: 20 x 600 sec
SII: 24 x 600 sec
Broadband: ZWO RGB
RGB stars:
R: 20 x 60 sec
G: 20 x 60 sec
B: 20 x 60 sec
Total integration time 15 h 20 min.


IC410 Tadpoles Annotated edit small


#6 Comatater


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Posted 05 March 2020 - 03:31 PM

Greetings. I took this image on the night of 15 Feb 2020. I will not be home much for the rest of the month, so will submit this one rather than make a new.


Imaging Scope: Celestron Nexstar 8SE SCT w/ .63 Reducer/Flattener

Imaging Camera: Canon T7i (Full Mod)

No Filters

Mount: iOptron CEM60

Guide Scope: Orion CT 80

Guide Camera: Orion SSAG

Exposure:  44 x 240" exposures Total: 2.9 Hours

20 Darks, 25 Flats, and 25 Bias frames

Moon Illumination:  55%


Captured using Astrophotography Tool.

Processed with Deep Sky Stacker and Photoshop




Attached Thumbnails

  • TadpoleFinalJPGSmall.jpg


#7 Dereksc


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Posted 05 March 2020 - 11:39 PM

I was also imaging the tadpoles last month. I switched over my telescope for galaxy season but found this target fit my FOV well.

I am in the process of adjusting the backspacing and collimation but was reasonably happy with this result:


Imaging telescope:Celestron C9.25 SCT
Imaging camera:ZWO ASI1600MM-C
Mount:Skywatcher EQ6R Pro
Guiding telescope:Celestron C9.25 SCT Orion Thin OAG.
Guiding camera:ZWO ASI174 Mini
Focal reducer:Celestron f/6.3 Focal Reducer

Resolution: 4527x3303
Dates:Feb. 20, 2020,  Feb. 21, 2020,  Feb. 24, 2020
ZWO B 1.25": 40x100" (gain: 76.00) -15C bin 1x1
ZWO G 1.25": 40x100" (gain: 76.00) -15C bin 1x1
ZWO Hɑ 7nm 1.25": 67x180" (gain: 200.00) -15C bin 1x1
ZWO R 1.25": 51x100" (gain: 76.00) -15C bin 1x1
Integration: 7.0 hours
Darks: ~20
Flats: ~20
Flat darks: ~20
Avg. Moon age: 18.33 days
Avg. Moon phase: 4.72%
Bortle Dark-Sky Scale: 6.00


Pixinsight ABE 1,2 , RGB combine, Masked stretch RGB and Ha, Swap R for HA, Histogram stretch and TGVDenoise




Here is the Astrobin link:








#8 GoBlue


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Posted 06 March 2020 - 09:50 PM

Imaged 3/4.


What we have here is some evil baboon from hell looking nebula with a couple of semen thrown in for giggles.

I digress.


ES ed 80 f/6.

Full spectrum modified t3i w/ idas lps d1.



89 x 180.

ISO 800.

Camera sensor temp +10c.

Dithered every image.



Either poor data or poor processing but mostly both. 

Do I get a participation certificate?




Attached Thumbnails

  • ic 410.jpg


#9 Rich139



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Posted 07 March 2020 - 04:28 AM

First submission to a monthly contest, finished in January this year. 12 hour integration taken from my bortle 9 rooftop in London. Full version on astrobin.


Imaging telescope or lens:Altair Astro Starwave Ascent 102ED F7

Imaging camera:ZWO ASI 1600MM cool
Mount:iOptron CEM25P
Focal reducer:Altair Astro Lightwave 0.8x reducer
Resolution: 2494x2052
ZWO Ha 7nm: 127x90" (gain: 200.00) -20C
ZWO OIII 7nm: 182x90" (gain: 200.00) -20C
ZWO SII 7nm: 182x90" (gain: 200.00) -20C
Integration: 12.3 hours
Bortle Dark-Sky Scale: 9.00
Pixel scale: 1.369 arcsec/pixel






#10 AKHalea



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Posted 09 March 2020 - 06:41 PM

Here is a widefield image of the 3 major Auriga DSO captured this season (22 Dec 2019). The 3 DSOs, of course, are ; IC 405 at the top, the IC 410 in the middle and IC 417 below that: 


12-22 Auriga-200mm csc 206Min STCrCNJ1.jpg


It was captured this image from my suburban Houston (Texas) backyard using the following gear :


Imaging telescope/lens: Older vintage 200mm f4 AIS AutoNikkor lens at f5.6,

Imaging camera : HA modded Nikon D5300 at ISO 800. Total integration time was 206 minutes (33x2Min + 35x4minutes),

Mount : iOptorn's iEQ30 Pro,

Filter : Dual narrowband filter from Omega Optical - the Improved NPB filter with bandpasses near HA and OIII emission lines,

No guiding or dithering,

Registering and Integration done in APP (Astro Pixel Processor) and post processing done in StarTools with final touch-ups in FastStone image viewer. 


At the image scale I am using, the tiny Tadpoles are barely visible. Oh well! At least the rest of nebulosity came out reasonably well.


Cheers & Clear skies ...... Anil

Edited by AKHalea, 09 March 2020 - 10:16 PM.


#11 rkelley61


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Posted 14 March 2020 - 12:59 PM

I had not captured IC410 previously so +1 on target selection.  On the other hand, my integration time is relatively limited and the results would benefit from additional imaging time.  Two mostly clear nights so far and a lot of clouds in the forecast so I decided to go with what I have. The other limiting factor is that I can image approximately 2 hours after the meridian before I'm taking pictures through trees, and this window is getting narrower as IC410 is past the meridian at dusk.  I wasn't really looking forward to this challenge initially due to the limited time I would have, but it gave me a chance to improve my results with IC405 which I had previously imaged.  Squeezing in both IC405 and IC410 barely fits within the frame of my widest FOV configuration, but IC410 by itself is a little small in this scope.  Overall I ended up liking this challenge much better than I originally thought.


Telescope: William Optics GT81  Focal reducer: WO Flat6A III .08x

Filters:Astronomik HA 6nm Oiii 6nm SII 6nm

Camera: ASI1600MM Pro Gain: 139.00 Temperature: -10C binning: 1x1

Mount: Losmandy GM811G

Images: 113x120" (Ha 45, SII 20, OIII 48)

Capture dates: March 7 and 11, 2020

Integration:3.8 hours



Avg. Moon age:14.51 days

Avg. Moon phase: 94%

Bortle Dark-Sky Scale:4.5

Pixel scale:2.028 arcsec/pixel

Data source: Backyard


Partial image:




For full image: https://astrob.in/hwvo8m/0/



#12 Gipht



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Posted 15 March 2020 - 12:54 PM

This picture uses the ASI071MC-Pro camera,  at 200  gain targeting -5C,  the STC duo band filter,  a  ES AR127 achromat at  f/5.2, and a CEM-60 mount.  33x4' taken on  3/14/20, stacked  in DSS, and developed in Star Tools and Gimp.  The Dark calibrations were not working properly,   and were leaving strong color gradients, so this picture is calibrated with just flats and dark flats.


The AR127 is a wonderful visual telescope, and corrects well in the color range of the STC filter, but is a challenge to use for photography, as the  focuser is not meant for heavier loads.



Attached Thumbnails

  • Tadpoles33x4.JPG


#13 Bretw01


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Posted 15 March 2020 - 08:03 PM

Imaged on 11-2 and 11-7 2019


57x300 (4.75 hrs)

-10 C

Gain 50 offset 10



2" L_eNhance filter

EQ6-R Pro


AstroPixelProcessor for pre-processing; PixInsight & Photoshop CC for post




#14 Gene3


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Posted 17 March 2020 - 10:59 PM

Taken November, December, some more HA added last week.


 Losmandy G11 with SiTech Sidereal controller

 Takahashi FSQ 85 Petzval

 300 x 96  Chroma Ha

 300 x 96  Chroma Sii

 300 x 96  Chroma Oiii

 Acquired in NINA Imaging.

 Processed in Pixinsight, finished in Lightroom.


 Full size



Hi Bret,

Great image

Just want to check my math. You got 24 hours on this target? Wow


#15 Bretw01


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Posted 18 March 2020 - 01:01 PM

Hi Bret,

Great image

Just want to check my math. You got 24 hours on this target? Wow

My image is 4.75 hours. Your math is correct but you quoted swordfishy. 


#16 tcchittyjr


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Posted 18 March 2020 - 03:32 PM

Here's my take.


Qty 30 120sec Ha (AD 5nm)

Qty 30 120sec Oiii (AD 5nm)

Qty 30 120sec Sii (AD 5nm)

SB Paramount MyT

NE of Orlando, FL

Sky-Watcher Esprit 120ED refractor


Taken March 14, 2020





Attached Thumbnails

  • IC410-small.jpg

Edited by tcchittyjr, 18 March 2020 - 03:36 PM.


#17 sctt50


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Posted 19 March 2020 - 03:31 PM

Amazing images from you all!  It is cool to see all the different interpretations and capture methods, and nice to have something fun to think about instead of worrying about the virus.


I was hoping to encourage you all to please post some details about how you processed.  Especially with the narrowband images: are they SHO, HSO, HOO, or whatever other types their may be.


I ask this because, as a long time beginner (lol.gif), it helps me to visualize how much signal to expect from the filter types.  Last night I picked up about 3 hours of data.  The H alpha exposures turned out great, but the S2 and O3 are WEAK...  Not sure if I should try for longer exposures with those filters, or if I should switch over to RGB for an HaRGB combination.  Any suggestions?


In general, is there much O3 and S2 in IC410?


Oh, and whoever picked this object for this months challenge, thumbs UP!






#18 tcchittyjr


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Posted 19 March 2020 - 04:09 PM



My pic (post 16) is SHO, as that is what pleased me the most.




#19 sctt50


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Posted 19 March 2020 - 04:50 PM



Thanks for sharing that, and your picture is awesome!  The colors are very pleasing!!!


So based on that info, there should be a fair amount of O3 signal, but very little S2?  Hmmm, maybe I'll shoot a bunch of O3 with longer exposures to see what I get.


I wonder how an HOO would turn out?  And is there such a thing as OOH?  Probably would be ugly star colors, but the blend would be nice with lots of blue.


Again, thanks and great shot.  You better start working on picking next months target in case you win the challenge!  Although they are all really great.




#20 tcchittyjr


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Posted 19 March 2020 - 04:53 PM



I didn't do an HOO, I used all three NB images to create one image. I had one that was to blue, and then this one, which pleased me more.




#21 Gene3


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Posted 20 March 2020 - 05:39 PM

Hi All,
Here is my attempt at IC410 in SHO.
The target was not in an optimal window for data collection very long each night, so I tried to get going as fast as possible each night that was clear, and there were clouds to deal with as well. I was glad I did not have to use time getting aligned as SkyX ProTrack worked very well and all I needed to do each night was grab a guide star. My guiding was 0.6 to 0.9 arcsex/pixel each night which I was grateful for given that I was collecting 900sec subs with a SVX152T at f8. FWMH averaged 2.38

56 subs @ 900sec each (14 hours total)
Feb 25: Ha=7  Oiii=6  Sii=6
Feb 26: Ha=6  Oiii=6  Sii=6
Mar 02: Ha=5  Oiii=5  Sii=4
Mar 17: Ha=2  Oiii=2  Sii=1
Flats: 20 each, Bias: 15, Darks: 15
Processed in PI. Created a synth L image for the detail to go with chrominance image then blended them together. Many thanks to Ron Brecher (AstroDoc) for his expertise with linear & non-linear post-processing.


 IC 410 Tadpoles SHO CN.jpg

Edited by Gene3, 20 March 2020 - 05:42 PM.


#22 sctt50


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Posted 21 March 2020 - 02:17 PM

What a cool object that I'd never tried before.  And probably wouldn't have tried if not for all the exceptional and inspiring images posted by you all!


So I gave it a shot under my Orange/Red skies in typically cloudy rainy Oregon.

  • Shot from 3/17-3/20, my first multi-night attempt.  And well worth the effort.  Normally my data (not enough data) blows up when I stretch things.  This was much cleaner and was pretty easy to process.
  • Orion Atlas mount controlled via ASCOM
  • Celestron 9.25SCT with 0.63 reducer
  • 50mm guide scope and QHY290m guide camera (having failed using an OAG...)
  • ASI1600m and ZWO filters, gain 300 offset 50
  • Captured using SGP and tracking with PHD2
  • 45 Ha exposures at 1 minute each.
  • 95 O3 exposures at 2 minutes each.
  • S2 exposures at 2 minutes gave me very little signal so I processed as bicolor
  • HOO processing using Nebulosity4 (as I haven't made much progress with PixInsight…)
  • I also tried and OOH pallate and that was a train wreck!  Weird colors for sure...

Thanks to Goofy for inspiring us all, you are greatly missed!


IC410, the tadpole nebula_tn.jpg


#23 kwpickett


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Posted 21 March 2020 - 03:10 PM

I'm only a couple months into this hobby.  Here's my first challenge submission.  Clearly, I could use much more time on this one.


It's about 2.5 hours of integration.


Imaging telescope or lens:William Optics Zenithstar Z73

Imaging camera:Nikon D5300 Ha modified

Mount:Orion Atlas EQ-G

Guiding telescope or lens:William Optics 50mm Guide Scope

Guiding camera:ZWO ASI 120 Mini Mono

Software:Adobe Phosotshop CC 2020,  APT Astro Photograhy Tool,  PHD2,  Cartes du Ciel Carte Du Ciel V.4.2,  DSS DeepSkyStacker

Resolution: 5786x3760

Dates:March 20, 2020

Frames: 50x180"

Integration: 2.5 hours

Avg. Moon age: 26.03 days

Avg. Moon phase: 13.26%

Data source: Backyard


Attached Thumbnails

  • Tadpole 2 nights crop resize.jpg


#24 Cfreerksen



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Posted 22 March 2020 - 05:03 PM

The "Tadpoles" IC 410


Learned a lot on this target. Enjoy!


Celestron EdgeHD 8

ZWO ASI1600MC-Pro 

Celestron CGX

Celestron .7x Focal Reducer for 8 EdgeHD

Celestron CPWI,  PHD 2,  NINA,  PixInsight

Astronomik SHO 6nm, Astonomik Deep Sky RGB

Dates:Feb. 7, 8, 9, 11, 27, March 10, 21 2020

Astronomik Ha 6nm: 23x540"

OIII 6nm: 23x540" 

SII 6nm: 23x540" (gain: 200.00) 
Astronomik Deep Sky RGB: 45x120" (gain: 100.00) -10C bin 1x1

Integration: 11.9 hours

Darks: ~30

Flats: ~35

Flat darks: ~35




Full res: https://www.astrobin...17l2/D/?nc=user


Attached Thumbnails

  • IC410_Tadpoles.jpg


#25 TelescopeGreg



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Posted 27 March 2020 - 01:29 AM



I gotta get me a new camera...  A request to whoever wins this month, pick something not emission-based.  Please?


The following is 3.5 hours worth of integration, taken over the course of 3 nights earlier this month (3/4, 3/11, 3/12).  Tonight 3/26 is marginal (transparency not all that good), and the rest of the month is worse, so this will be it.


I've concluded that my NON-modified Nikon D3200 is just not sensitive to Ha light.  This is one of several targets that I've failed to capture much of anything in that part of the spectrum, and the lack of good sky transparency when it wasn't otherwise raining surely hasn't helped.  As you can see, what nebulosity exists isn't in the Ha portion, and the tadpoles are hiding.  Oh, well.


Camera:  Nikon D3200, unmodified.  Shutter controlled by Intervalometer

351 subs, a mix of 30 sec & 60 sec at various ISOs between 3200 and 12,800, trying to extract a bit more of the nebula

Total integration time = 3.5 hours. 


Telescope:  Stellarvue SVA130EDT (130mm f/7)  No flattener or reducer

Mount:  Celestron AVX

Guider:  ZWO 60mm f/4.6, with ASI174 guide camera

At-mount computer:  4 GB Raspberry Pi 4B, Astroberry 2.0;   CCDciel, ASTAP, PHD2.

Stacked with a mix of Deep Sky Stacker and Sequator

Processed with StarTools 1.3.  Slightly cropped due to imperfect Flats


The integration process stacked the first 2 nights with their respective calibration frames, then the 3rd night separately, then combined the two stacks together.  Trying to stack all 3 nights at once yielded a bizarre image a few dozen pixels wide and full image tall.  No clue what happened, not going to mess with it.


Don't laugh...







Attached Thumbnails

  • IC410 1st two plus 3rd nights combined (3.5hrs total)-b.jpeg


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