Heart (Ced7/Cr26/IC1805/LBN654/Mel15/Sh2-190) and Fishhead (Ced6/IC1795/LBN645/NGC896) Nebulae (c-sho)

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ram
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Heart (Ced7/Cr26/IC1805/LBN654/Mel15/Sh2-190) and Fishhead (Ced6/IC1795/LBN645/NGC896) Nebulae (c-sho)

#1

Post by ram »

Also includes: Cr30/Mel16/IC1824/NGC1027, IC1831, LBN646-48,50,55-57, and LDN1356,59-73.

Total integration: 43.75 hours/2625 minutes (136x7m = ~16h for Ha + 92x7m = ~11h for O3 + 147x7m = ~17h for S2).
ic1805_sho.v3.2.jpg
ic1805_sho.v3.4.jpg
Camera: QHY163M (16mp mono) CMOS cooled to -15 degrees C.
Telescope: Stellarvue SV70T triplet apochromat refractor @ f/4.8.
Reducer: SFFR70-APO
Mount: Paramount MyT.
Filters: Astrodon 5nm Ha, 3nm O3, 3nm S2.
Software: TheSkyX Pro, SharpCap, PixInsight.

Inline images with reduced quality uploaded to the forum. Full resolution versions of all versions are available via https://www.astrobin.com/97h2mp/ and of the primary image at fhttp://ram.org/images/space/scope/1.4.4.5/ic1805_136x420+92x420+147x420_2625m_43.8h.jpg

The Heart nebula region is about 7500 light years away from Earth in the constellation Cassiopeia. The 330 light year diametre complex contains the eponymous emission nebula (Ced7/Cr26/IC1805/LBN654/Mel15/Sh2-190) shaped correspondingly, along with a separate region labelled the Fishhead nebula (Ced6/IC1795/LBN645/NGC896), which was the first part to be discovered. The nebula's shape and distinct signal is due to a cluster of stars in the middle in an area that could appropriately be called the tendrils of creation.

One of the more striking aspects of this nebulosity is the number of dark nebulae (~15) contained within it (LDN1356 and LDN1359 through LDN1373) many of which I've tried to highlight especially on the Ha only image. There's also a small open cluster to the right (Cr30/Mel16/IC1824/NGC1027). One of the cooler features is the ring nebulosity in the centre which you can make out if you look closely, which is like a second (or more likely separate) shell of gases being pushed out.

This capture is part of my "make up for being a newbie" series, where usually once a year I revisit one of my very first images and redo it with the latest capturing and processing techniques that I've learnt. In this regard, the Heart nebula complex represented a lot of firsts for me: it was one of my very first astrophotography images, my first narrowband image, the first colour image with the SV70T scope, and it was done on my first mount. This version which I did back in 2017 had a total of integration of 4.7 hours, so this current version has almost ten times as much information going into it. I hope you'll agree with me that this current version is a far cry from the image I did using live stacking, 8 bit PNGs, and my AVX where I could only get two minutes unguided per frame, yielding a total integration of less than five hours (https://www.astrobin.com/305156/).

There's ~44 hours of captured data going in this version and I think even though the gains are incremental, I was able to bring out additional background nebulosity and details, as well as reduce noise, particularly in the Ha only image which I thought turned out really good: deconvolution actually worked like I thought it would for the first time and I was able to achieve a balance between sharpening and noise reduction. When I first started redoing this, the moon was half full so I decided to capture S2 data first and I was off a bit in my framing which I only corrected after my first session (there's a seam barely visible if you can spot it). I was able to use it but it is why I have the most amount of data using this filter since I wasn't sure if the first session would be useable in the end. Overall, I would have to say this is the first image where everything came together nicely in terms of processing. Take for example the ring nebulosity, it's missed in many images of this target or not pronounced (my previous image doesn't have it at all) but it shows up here nicely.

I've put up two bicolour and tricolour Hubble palette versions of this capture on AstroBin along with the Ha only version which I posted previously here (one of each is included in this post). Previously I had done a HOS combination but that was mostly Ha data since I had done a crappy job on the O3 and S2 data; this time the colours in the HOS were okay but not as good as the SHO version so it is not being showcased (just imagine the Ha only image in bright red and you get the picture). The framing is also the "right side up", looking at it from the Earth.

As always, I'm curious about which version people like (or don't like); thanks for looking!

--Ram
Tubes: Celestron 9.25" 235mm f/10 XLT EdgeHD SCT; Meade ETX 80mm f/5 achromat; Coronado SolarMax II 60mm f/6.6 Hα <0.7Å BF10 solar; Stellarvue 70mm f/6 triplet apochromat; Obsession UC18 457mm f/4.2 with Argo Navis & ServoCAT; Takahashi FS128 5" f/8.1 and FC100DF 4" f/7.4 fluorite doublet apochromats. Mounts: AVX; LXD75; Paramount MyT. Eyepieces: 2" Tele Vue Ethos 4.7/13/21mm, Paracorr, 2,4x Powermate; Stellarvue 0.8x, Takahashi 0.7x, 0.66x reducer/corrector. Cameras: ZWO ASI120MC-S; Lodestar X2c; X2m; Canon T7i; QHY163M; QHY247C; QHY294M-Pro. Filters: 1.25" Astrodon 5nm Ha, 3nm O3 and S2; Chroma LRGB.
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Re: Heart (Ced7/Cr26/IC1805/LBN654/Mel15/Sh2-190) and Fishhead (Ced6/IC1795/LBN645/NGC896) Nebulae (c-sho)

#2

Post by BABOafrica »

ram wrote: Wed Aug 12, 2020 4:35 am This capture is part of my "make up for being a newbie" series, where usually once a year I revisit one of my very first images and redo it with the latest capturing and processing techniques that I've learnt...

--Ram
Well, you're doing a good job on that score...

BEAUTIFUL image. I love the color in the first one.

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Re: Heart (Ced7/Cr26/IC1805/LBN654/Mel15/Sh2-190) and Fishhead (Ced6/IC1795/LBN645/NGC896) Nebulae (c-sho)

#3

Post by ram »

Thank you BABO - I appreciate it. I think this is the first one I've "made up" that I'm satisfied with - the others were okay but I think I need to do a re-make up of those but it never ends does it?

--Ram
Tubes: Celestron 9.25" 235mm f/10 XLT EdgeHD SCT; Meade ETX 80mm f/5 achromat; Coronado SolarMax II 60mm f/6.6 Hα <0.7Å BF10 solar; Stellarvue 70mm f/6 triplet apochromat; Obsession UC18 457mm f/4.2 with Argo Navis & ServoCAT; Takahashi FS128 5" f/8.1 and FC100DF 4" f/7.4 fluorite doublet apochromats. Mounts: AVX; LXD75; Paramount MyT. Eyepieces: 2" Tele Vue Ethos 4.7/13/21mm, Paracorr, 2,4x Powermate; Stellarvue 0.8x, Takahashi 0.7x, 0.66x reducer/corrector. Cameras: ZWO ASI120MC-S; Lodestar X2c; X2m; Canon T7i; QHY163M; QHY247C; QHY294M-Pro. Filters: 1.25" Astrodon 5nm Ha, 3nm O3 and S2; Chroma LRGB.
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Re: Heart (Ced7/Cr26/IC1805/LBN654/Mel15/Sh2-190) and Fishhead (Ced6/IC1795/LBN645/NGC896) Nebulae (c-sho)

#4

Post by MariusD69 »

Wonderful! Well done, Ram!
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Re: Heart (Ced7/Cr26/IC1805/LBN654/Mel15/Sh2-190) and Fishhead (Ced6/IC1795/LBN645/NGC896) Nebulae (c-sho)

#5

Post by ram »

Thank you, as always, Marius!
whatisthis.jpg
Does anyone know what this is? I'm referring to the tiny blue thing to the left of this cropped region (on the left middle portion of the image - I've included a greater portion of the image for context). It is not an artifact: it's in other people's images and on sky surveys, etc. at the WWT but I don't see it identified anywhere. Is it just some nebulosity in Ha/O3? It looks like it could be a galaxy or a planetary nebula but I'm wondering if anyone has identified it.

--Ram
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Re: Heart (Ced7/Cr26/IC1805/LBN654/Mel15/Sh2-190) and Fishhead (Ced6/IC1795/LBN645/NGC896) Nebulae (c-sho)

#6

Post by Kanadalainen »

44 hours of integration makes for an incredibly nice image. :)

Awesome.
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Re: Heart (Ced7/Cr26/IC1805/LBN654/Mel15/Sh2-190) and Fishhead (Ced6/IC1795/LBN645/NGC896) Nebulae (c-sho)

#7

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Awesome and stunning images 🤩
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Re: Heart (Ced7/Cr26/IC1805/LBN654/Mel15/Sh2-190) and Fishhead (Ced6/IC1795/LBN645/NGC896) Nebulae (c-sho)

#8

Post by Gordon »

Congratulations Ram on having your image selected as todays TSS APOD!

app.php/article/8-12-2020-tss-astrophot ... of-the-day
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Re: Heart (Ced7/Cr26/IC1805/LBN654/Mel15/Sh2-190) and Fishhead (Ced6/IC1795/LBN645/NGC896) Nebulae (c-sho)

#9

Post by Makuser »

Hi Ram. This is beautiful work from you. I like both versions, but the first seems to have more contrast, details, and pleasing color. Thanks for taking the time to put these up on here for us to enjoy Ram, and congratulations on winning the TSS APOD Award today.
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Re: Heart (Ced7/Cr26/IC1805/LBN654/Mel15/Sh2-190) and Fishhead (Ced6/IC1795/LBN645/NGC896) Nebulae (c-sho)

#10

Post by ram »

Thank you all - I appreciate the kind words, selection, and responses to my question - so my wife and daughter are the only ones who preferred the green versions (my daughter because she thinks all our images start to look alike and we should go for differen palettes - a lot of my images' colours are due to her influence - my wife because green is her favourite colour) but I do think that version (it was actually the second one I did but the first one posted above) is the one that really pops out in a surprising manner.

Thanks again!

--Ram
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Re: Heart (Ced7/Cr26/IC1805/LBN654/Mel15/Sh2-190) and Fishhead (Ced6/IC1795/LBN645/NGC896) Nebulae (c-sho)

#11

Post by STEVE333 »

Two nice versions Ram - The one with green is certainly more colorful. However, I still prefer the first one because, to me, it shows some of the faint nebulosity details better. Just a matter of taste.

Congratulations on the APOD.

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Re: Heart (Ced7/Cr26/IC1805/LBN654/Mel15/Sh2-190) and Fishhead (Ced6/IC1795/LBN645/NGC896) Nebulae (c-sho)

#12

Post by ram »

Thanks a lot Steve, I agree, as you said before, that (first) image somehow "pops" out - looking at all four images, this seems like the "brightest".

Anyways, it was good to put all the stuff we learnt together processing the Lion image to practice and actually have it come together well! (I tried on the Wizard and Pacman and need to go back and redo them but I think I know where I'm making mistakes most of the time and sometimes I have tended to do things carelessly, like forgetting a mask, or having an inappropriate mask, etc.). The mask stuff is very powerful but still very new to me...

--Ram
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Re: Heart (Ced7/Cr26/IC1805/LBN654/Mel15/Sh2-190) and Fishhead (Ced6/IC1795/LBN645/NGC896) Nebulae (c-sho)

#13

Post by Hankmeister3 »

Beautiful. Certainly poster quality.
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Re: Heart (Ced7/Cr26/IC1805/LBN654/Mel15/Sh2-190) and Fishhead (Ced6/IC1795/LBN645/NGC896) Nebulae (c-sho)

#14

Post by Graeme1858 »

43.75 hours!!! That is proper tenacity! I think I'm with Steve on the colours and details.

Congratulations on the APOD. Well deserved.

Regards

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Re: Heart (Ced7/Cr26/IC1805/LBN654/Mel15/Sh2-190) and Fishhead (Ced6/IC1795/LBN645/NGC896) Nebulae (c-sho)

#15

Post by BABOafrica »

Well, maybe the reaction to "green" has something to do with prejudice. I remember many comments in my early years of processing -- people telling me that I had "too much green" in my image... I guess I developed an aversion to green...

But all said and done, the image is beautiful in every detail. Congrats on TSS APOD !!!

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Re: Heart (Ced7/Cr26/IC1805/LBN654/Mel15/Sh2-190) and Fishhead (Ced6/IC1795/LBN645/NGC896) Nebulae (c-sho)

#16

Post by TheButcher »

Excellent images Ram and congrats on the APOD!
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Re: Heart (Ced7/Cr26/IC1805/LBN654/Mel15/Sh2-190) and Fishhead (Ced6/IC1795/LBN645/NGC896) Nebulae (c-sho)

#17

Post by Ruud »

Pretty colours! Congrats on a wonderful image and the new APOD.
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Re: Heart (Ced7/Cr26/IC1805/LBN654/Mel15/Sh2-190) and Fishhead (Ced6/IC1795/LBN645/NGC896) Nebulae (c-sho)

#18

Post by jthommes »

Nice images Ram. I do like the first one best. Congrats on the APOD.
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