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EAA Monthly Observing Challenge - June 2021

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#51 bmcclana

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Posted 14 June 2021 - 03:38 PM

And finally, revisited M27 just before the clouds got me.  I think this is an improvement, even with less total time.

 

M27 15sx20 300s (5 min)

 

M27_20frames_300s.jpg

 

 


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#52 drprs8181

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Posted 15 June 2021 - 07:05 AM

So I found a sketch of the location of M1-92 in Astronomy Magazine's website.  Looking back at the pics posted here so far we all got it the first time, so I went back with the Z130 to see if I could tease out more detail (sorry if these do-overs violate the rules of the challenge).  I used a 2x and 3x Barlow to see if I could get a more pronounced elongation...and it's there (note to self: buy better Barlows).  A "tail" that not present on the other stars.

 

 

Equipment:

  • Zhumell Z130
  • ZWO ASI224MC
  • AZ-GTe Mount in Alt-Az mode

Details:

  • Images live stacked in Sharpcap, darks and flats applied, histogram adjusted then "Save as seen"
  • Bortle 6
 
M1-92 Footprint Nebula - 6/14/21 @ 2305 - 65x8s | Gain 300 - Transparency: Average - Z130
M1-92 Footprint Nebula Z130
 
3x Barlow - 40x8.5s | Gain 395
M1-92 Footprint Nebula Z130 3x Barlow
 
Zoomed in Sharpcap screengrab from trying with 2x Barlow
Footprint Nebula 2x screencap
 
Sharpcap screengrab from trying with 3x Barlow
Footprint Nebula 3x screencap

Edited by drprs8181, 15 June 2021 - 07:07 AM.

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#53 PeterAB

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Posted 15 June 2021 - 09:50 AM

Hello,

 

I was having trouble stacking with Sharpcap.   Much to do with the learning curve.   Also with my equipment being selected for visual rather than EAA.

 

I found a paragraph deep in the Sharpcap manual on adjusting my camera's black level.    It said to adjust the black level with the telescope capped to move the histogram peak up from zero.    I did that and now I'm stacking 100% of the frames with default settings, up from 25%.

 

This is my new m64.

 

M64 Stack 50frames 750s

 

 

50 15-second exposures.    No post processing.   Black applied.  Uncropped.  Hysterogram stretched.  Gain 30.  130mm AWB OneSky reflector on a CG-4 mount with a motor.   Svbony sv305 pro.   City backyard 3.5 naked eye limiting magnitude.

 

Peter


Edited by PeterAB, 15 June 2021 - 09:51 AM.

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#54 Alien Observatory

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Posted 15 June 2021 - 10:07 AM

drprs8181, Winner, Winner, Chicken Dinner...You got it...Pat Utah smile.gif

Attached Thumbnails

  • M1_92 .jpeg

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#55 drprs8181

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Posted 15 June 2021 - 10:36 AM

drprs8181, Winner, Winner, Chicken Dinner...You got it...Pat Utah smile.gif

w00t!  

 

This is really fun, thanks for putting together these monthly lists! 

I've learned more about EAA/Sharpcap/Histograms/Livestacking/etc. working on these over the last two weeks than I would have just shooting whatever. 


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#56 bmcclana

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Posted 15 June 2021 - 02:17 PM

Nice catch!

 

Now I will have to try this one again to see if I can find that tail.

 

I agree that having a nice list of easy > hard targets has been great for learning how to make this all work together and have some nice results along the way.

 

 

Thanks Pat.


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#57 Alien Observatory

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Posted 15 June 2021 - 04:30 PM

The EAA Challenge was started a few years ago and continues on to this day.  Errol (A+++) has been organizing the Monthly Challenge for the past few years and he recruits members to handle a specific month or two.  I took May and June for 2021 sometime late last year.  It is good to get feedback and know it is useful to the EAA Forum members.  Thanks  Pat Utah :)

 

 

The Monthly Challenge Link....

https://www.cloudyni...ing-challenges/


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#58 PeterAB

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Posted 16 June 2021 - 08:59 AM

Hello,
 
I got a look at NGC 6543 last night.   I haven't spent much time looking in Draco, so that was fun. 
 
Through the eyepiece, NGC 6543 was a dim turquoise colored dot with a hint of a disk.   Much like an out of focus star, but, also kind of like a small planet.
 
Here is my image.    There is a bonus galaxy to the east (NGC 6552).   I let the total exposure run longer to pick out NCG 6552 a little better, plus, I was staring to get a hint of bright area in the halo to the west of the nebula core.
 
NGC 6543 (Cat's Eye Nebula) Stack 47frames 705s- North UP
 
47 15-second exposures.    No post processing.   Uncropped. Black subtracted.  Hysterogram stretched.  Gain 30.  130mm AWB OneSky reflector on a CG-4 mount with a motor.   Svbony sv305 pro.   City backyard 3.5 naked eye limiting magnitude.

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#59 bthrel

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Posted 16 June 2021 - 10:23 AM

My 1st ever EAA challenge, was not/have not been able to capture the last two, but the month is young so will keep trying. All shot with William Optics 120MM F7.5 Megrez ( no reducer/flattener), Camera - ZWO ASI 294PRO, gain 300, Dark/Flat cooler at 10°C.

 

Still learning, but getting better and better results each outing. Still struggling with color balance and Darks/Flats. During these sessions I utilized my new PowerBox from Peagsus, worked a champ, plan to use a 50FT powered USB3 cable soon and move my computer away from the dew filled air here.

 

Anyway for your perusal and comments

 

M5

 

M5 9Frames 72s gain300
 
M27 
 
M27 Dumbell 15Frames 420s gain300
 
M64
 
M64 Blckeye 13Frames 104s gain300
 
M16
 
M16 Eagle 17frames 510s gain300

 

M17

 

M17 Swan 3frames 90s gain300

 

Pillars of Creation zoom of M16

 

Pillars Of Creation zoom crop
 
Lastly IC1470
 
IC14705Frames 75s gain300

 

 

 

 

 


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#60 GaryShaw

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Posted 16 June 2021 - 10:43 AM

For those of you lucky folks who've managed to get a look at M1-92, I'm attaching a diagram of the structure of The Footprint and a link to the article where the diagram came from. I know these monthly challenges focus mainly on the image captures of the Challenge objects, but,I thought it might nice to learn a bit more about what we're looking at. M1-92, being a bi-polar 'proto-planetary nebula seemed pretty interesting so here's a link if you'd like to learn more.

 

Thanks to Pat & Judy for including it in the Challenge (hope I can get a look too)

 

Cheers

Gary

 

https://iopscience.i...1086/428391/pdf

 

M1-92 Footprint.jpg

 

M1-92.JPG


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#61 Lastinline

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Posted 17 June 2021 - 10:53 AM

Here is a widefield shot of M16 and M17 together. I was not using a flat, so I will try to improve on this next time.
 
Askar FMA180, ASI 294MC + L-Enhance. 10s x 34
 
M16 Stack 34frames 340s WithDisplayStretch edited

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#62 alphatripleplus

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Posted 17 June 2021 - 12:23 PM

Three more targets from the last few nights taken with (as noted) either C8 @ f/3.7 (twin f/6.3 reducers), or AT72EDII @ f/4.3 and 7nm H-alpha filter. All using an ASI290MM mini running ASILive vs 1.4 at high gain, and no binning:

 

 

 

IC1470 (Pearl on Tongue); 24 x 25s; AT72EDII (H-alpha):

 

IC1470_Ha_f4.3F_Light_Stack_24frames_25sec_RScrp_Bin1_22.1C_gain300_2021-06-16_005405.jpg

 

 

I cropped and zoomed in on the above target as the scope was only at 311mm focal length.

 

 

 

For M16 and M17 I took a couple of comparison wider angle shots using the H-alpha filter and AT72ED, vs narrower unfiltered views with the C8:

 

 

 

M17; 12 x 25s; AT72EDII (H-alpha)

 

M17_Ha_f4.3F_Light_Stack_12frames_25sec_RS_Bin1_23.2C_gain300_2021-06-16_231315.jpg

 

 

Note the bonus satellite trail in the above pic that I did not see while stacking.lol.gif

 

 

M17; 60 x 5s; C8 (no filter)

 

M17_f3.7_Light_Stack_60frames_5sec_RS_Bin1_27.7C_gain300_2021-06-13_235236.jpg


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#63 alphatripleplus

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Posted 17 June 2021 - 12:29 PM

Continuing.....

 

 

M16; 12 x 25s; AT72EDII (H-alpha)

 

M16_Ha_f4.3F_Light_Stack_12frames_25sec_RS_Bin1_24.0C_gain300_2021-06-16_224724.jpg

 

 

M16; 60 x 5s; C8 (no filter)

 

M16_f3.7_Light_Stack_60frames_5sec_RS_Bin1_27.7C_gain300_2021-06-13_234106.jpg

 

 

The pillars are visible in both shots, but the H-alpha view needs more subs to tame the background noise.

 


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#64 Turf

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Posted 17 June 2021 - 12:32 PM

Hey there,

i've slowing been building my EAA rig and now i can play!  i've only had the camera about 2 weeks, so definitely just learning.

 

C8 telescope, Zwo asi 294 MC pro

M5

M5.png

 

M27

M27.png

 

M64

M67 Blackeye nebula.png

 

 

 


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#65 Turf

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Posted 17 June 2021 - 12:35 PM

part 2

 

M16

M16 pilars of creation.png

 

M17

M17.png

 

and IC 1470

IC 1470.png

in the lower left corner

 

 

at that point i tap out..... y'all go over my head with the last 2

 

this is fun!!

 

 

Dave

 


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#66 roelb

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Posted 17 June 2021 - 04:01 PM

 

Hello,
 
I got a look at NGC 6543 last night.   I haven't spent much time looking in Draco, so that was fun. 
 
Through the eyepiece, NGC 6543 was a dim turquoise colored dot with a hint of a disk.   Much like an out of focus star, but, also kind of like a small planet.
 
Here is my image.    There is a bonus galaxy to the east (NGC 6552).   I let the total exposure run longer to pick out NCG 6552 a little better, plus, I was staring to get a hint of bright area in the halo to the west of the nebula core.
 
 
 
47 15-second exposures.    No post processing.   Uncropped. Black subtracted.  Hysterogram stretched.  Gain 30.  130mm AWB OneSky reflector on a CG-4 mount with a motor.   Svbony sv305 pro.   City backyard 3.5 naked eye limiting magnitude.

 

Perhaps try a smaller sub exposure to avoid "over-exposure".


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#67 PeterAB

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Posted 17 June 2021 - 04:36 PM

Thanks.   NGC 6543 has much more surface brightness (m5.5)  than I was expecting.   There may be some detail that I lost.  That would more correctable than an optics, mount, or focus issue.     Maybe a little less gain as well?

 

Peter


Edited by PeterAB, 17 June 2021 - 04:49 PM.


#68 Cey42

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Posted 17 June 2021 - 08:57 PM

Equipment

  • Celestron 8” SCT
  • Celestron Advanced VX mount
  • Celestron F6.3 focal reducer
  • Darks/Flats applied
  • Offset 10, binning of 1 for all images
  • Bortle 7 (red zone).
  • Seeing OK.
  • Live Stacked.  Screen Saved (Cropped and Resized)

 

 

Decided to stay up late to see if some of this month’s objects would rise over my house or get past the trees. Got lucky and most of them they did.

 

 

Using ZWO ASI294MM. No filter.

M1-92
48x6s. 300 gain.
I really like the star field in this one. Hard to tell that this is M1-92. Might need shorter exposures.

M1-92-6_16_2021-75x3s.jpg

 

 

 

 

Using ZWO ASI294MC. Optolong LPro filter

 

M27
27x12s. 300 gain.
This was one of the first DSO that I imaged when I started EAA 9 months ago. Still looks amazing and my skills and equipment have definitely improved.

M27-6_16_2021-27x12s.jpg

 

 

 

NGC6543/C6
48x6s. 300 gain.
I am surprised on how much structure that I can see. This is one of those objects that I really need to move the mid-line to the right in SharpCap

C6-6_16_2021-48x6s.jpg

 

 

M16
28x12s. 300 gain.
This was very low at 23 degrees and towards the 5th largest city in Washington. I did not know what to expect in terms of image quality. WOW! I was blown away on how good this came out. So much detail.

EAA just amazes me when I see images like this on computer in less than 5 minutes. This image made my night.

M16-6_16_2021-28x12s.jpg

M16-Pillars-6_16_2021-28x12s.jpg

 

 

M17
29x12s. 300 gain.
Given how good M16 turned out, I had high expectations for this one and it did not disappoint.

M17-6_16_2021-29x12s.jpg

 

 


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#69 bdoyle

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Posted 18 June 2021 - 10:41 AM

M16. Taken at club event 6/12. Nothing went right that night, pretty much all I got for the evening. But I'm happy with it.

Meade LX90 8in SCT with 6.3 focal reducer on HEQ5 mount

ZWO ASI294MC Pro

SharpCap Pro

Live stack 171 frames, 8 sec each, Gain 400

 

Attached Thumbnails

  • Stack_171frames_1368s_G400~23min_srnk.jpg

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#70 bmcclana

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Posted 18 June 2021 - 07:55 PM

Went back for the footprint M1-92 one more time.

This time with the C5 at native focal length ~1250mm ( haven’t solved it for the exact number yet). Other configuration info was the same

Edit: solved on asterometry.net and focal length as configured is closer to 1425mm… guess I need to check my spacing.

I was able to get it for sure now with the elongated asymmetric shape.

2s x 150 frames 300s, (5 min) gain 350

61470819-3C37-4FD0-B33F-61E3F29A450A.jpeg

Edited by bmcclana, 19 June 2021 - 12:14 PM.

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#71 GaryShaw

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Posted 18 June 2021 - 09:35 PM

Continuing.....

 

 

M16; 12 x 25s; AT72EDII (H-alpha)

 

attachicon.gifM16_Ha_f4.3F_Light_Stack_12frames_25sec_RS_Bin1_24.0C_gain300_2021-06-16_224724.jpg

 

 

M16; 60 x 5s; C8 (no filter)

 

attachicon.gifM16_f3.7_Light_Stack_60frames_5sec_RS_Bin1_27.7C_gain300_2021-06-13_234106.jpg

 

 

The pillars are visible in both shots, but the H-alpha view needs more subs to tame the background noise.

Errol, what gain are you using with the 290 and Ha filter ?

Gary



#72 alphatripleplus

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Posted 18 June 2021 - 10:15 PM

Three more targets from the last few nights taken with (as noted) either C8 @ f/3.7 (twin f/6.3 reducers), or AT72EDII @ f/4.3 and 7nm H-alpha filter. All using an ASI290MM mini running ASILive vs 1.4 at high gain, and no binning:

 

 

 

 

Gary, as noted I am using the high gain setting in ASI Live for all my captures here - there are only 3 gain settings in ASI Live (low, medium and high). ZWO indicates a value of 300 gain in the filename when I save, so I assume that high gain is 300.


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#73 roelb

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Posted 20 June 2021 - 04:28 PM

IC 1470   Bright nebula in Cep

Evo 8 @ 4.7   

ZWO ASI290MM

Bortle 7

25  x 8 s

IC 1470_ZWO ASI290MM(53045621)_25 x 8,0s = 200s_Evo 8 - B7_10-6-2021T01_53_05.jpg

CROP

IC 1470_ZWO ASI290MM(53045621)_25 x 8,0s = 200s_Evo 8 @ 4.7_B7_10-6-2021T01_53_05_CROP.jpg

 

 

Evo 8 @ 5.3

ZWO ASI533MC-Pro

Bortle 4

86 x 5 s

IC 1470_ZWO ASI533MC Pro_86 x 5,0s = 430s_Evo 8 @ 5.3_B4_19-6-2021T01_53_11.jpg

CROP

IC 1470_ZWO ASI533MC Pro_86 x 5,0s = 430s_19-6-2021T01_53_11_CROP.jpg

 

M 5 - "Rose" Globular Cluster in Ser

Evo 8 @ 5.3

ZWO ASI533MC-Pro

Bortle 4

15 x 2 s

M 5 - Rose Glob.Cl._ZWO ASI533MC Pro_15 x 2,0s = 30s_Evo 8 @ 5.3_B4_14-6-2021T01_08_58.jpg

 

M 16 - "Eagle" Bright nebula in Ser

Evo 8 @ 5.3

ZWO ASI533MC-Pro

Bortle 4

12 x 45 s

M 16 - Eagle Neb._ZWO ASI533MC Pro_12 x 45,0s = 540s_Evo 8 @ 5.3_B4_14-6-2021T01_19_59.jpg

 


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#74 roelb

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Posted 20 June 2021 - 04:30 PM

M 17 - "Omega" Bright nebula in Sgr

Evo 8 @ 5.3

ZWO ASI533MC-Pro   capture area: 1504 x 1504 

Bortle 4

10 x 45 s

M 17 - Omega Neb._ZWO ASI533MC Pro_10 x 45,0s = 450s_Evo 8 @ 5.3_B4_14-6-2021T01_37_11.jpg


Edited by roelb, 20 June 2021 - 04:35 PM.

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#75 roelb

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Posted 20 June 2021 - 04:34 PM

M 17 - "Omega" Bright nebula in Sgr

Evo 8 @ 5.3

ZWO ASI533MC-Pro   capture area: 3008 x 3008

Bortle 4

13 x 45 s

M 17 - Omega Neb._ZWO ASI533MC Pro_3008x3008_13 x 45,0s_Evo 8 @ 5.3_B4_14-6-2021T01_46_50.jpg


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