Why Can't I See That Galaxy?

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kt4hx
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Why Can't I See That Galaxy?

#1

Post by kt4hx » Fri Oct 11, 2019 8:37 am

Why Can't I See That Galaxy?
by kt4hx

So, you’ve taken your time to learn the bright stars, and you can point out many constellations, and know where the planets are in the sky. You’ve learned how to collimate to your satisfaction, if your scope requires it. You’ve also learned how to star hop pretty well, and locating a few of the...
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Alan

Astro Sky 17.5 f/4.5 Dob || Apertura AD12 f/5 Dob || Zhumell Z10 f/4.9 Dob
ES AR127 f/6.5 & ED80 f/6 on Twilight-II || Apertura 6" f/5 Newtonian on Twilight-I
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"What we know is a drop, what we don't know is an ocean." (Sir Isaac Newton)
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Re: Why Can't I See That Galaxy?

#2

Post by KingClinton » Fri Oct 11, 2019 9:22 am

Thanks for bringing this over here Alan.
It's a great article and a good resource for both those fledging DSO hunters and the old hands alike!
Eyeballs, binoculars, sketch box, Scopes n stuff.
Some people don't understand why I love astronomy so much, I cannot understand why they do not!

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Re: Why Can't I See That Galaxy?

#3

Post by kt4hx » Fri Oct 11, 2019 10:00 am

KingClinton wrote:
Fri Oct 11, 2019 9:22 am
Thanks for bringing this over here Alan.
It's a great article and a good resource for both those fledging DSO hunters and the old hands alike!
My pleasure. and thank you Clinton. I do hope it helps some folks out with their galaxy hunting. :)
Alan

Astro Sky 17.5 f/4.5 Dob || Apertura AD12 f/5 Dob || Zhumell Z10 f/4.9 Dob
ES AR127 f/6.5 & ED80 f/6 on Twilight-II || Apertura 6" f/5 Newtonian on Twilight-I
ES 82° 24mm, 18mm; Pentax XW 70° 10mm, 7mm, 5mm + 2 inch and 1.25 inch Barlows
DGM NPB Filter || Orion Ultra Block, O-III and Sky Glow Filters || Baader HaB Filter
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"Astronomers, we look into the past to see our future." (me)
"What we know is a drop, what we don't know is an ocean." (Sir Isaac Newton)
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Re: Why Can't I See That Galaxy?

#4

Post by Don Quixote » Fri Oct 11, 2019 2:10 pm

Thank you Alan for posting this here.
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Re: Why Can't I See That Galaxy?

#5

Post by helicon » Fri Oct 11, 2019 2:13 pm

Hi Alan. Glad that this classic from AF.net is finally over here. Great article!
-Michael
Various scopes, 18" Obsession Dob, 10" Zhumell Dob, ES AR152, AWB 5.1" Onesky newt, Oberwerk 25x100 binos, two eyeballs
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Re: Why Can't I See That Galaxy?

#6

Post by kt4hx » Fri Oct 11, 2019 8:38 pm

Don Quixote wrote:
Fri Oct 11, 2019 2:10 pm
Thank you Alan for posting this here.
Thanks Mark, and hope it proves useful. :)

helicon wrote:
Fri Oct 11, 2019 2:13 pm
Hi Alan. Glad that this classic from AF.net is finally over here. Great article!
Thank you Michael. I thought maybe it might come in handy since we are picking up new members over here and generating increased activity. :)
Alan

Astro Sky 17.5 f/4.5 Dob || Apertura AD12 f/5 Dob || Zhumell Z10 f/4.9 Dob
ES AR127 f/6.5 & ED80 f/6 on Twilight-II || Apertura 6" f/5 Newtonian on Twilight-I
ES 82° 24mm, 18mm; Pentax XW 70° 10mm, 7mm, 5mm + 2 inch and 1.25 inch Barlows
DGM NPB Filter || Orion Ultra Block, O-III and Sky Glow Filters || Baader HaB Filter
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"Astronomers, we look into the past to see our future." (me)
"What we know is a drop, what we don't know is an ocean." (Sir Isaac Newton)
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Re: Why Can't I See That Galaxy?

#7

Post by AntennaGuy » Fri Oct 11, 2019 9:16 pm

Very helpful. Thank you.
* Celestron C6 on a Twilight 1 Alt-Az mount
* Meade 323 refractor on a manual equatorial mount.
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Re: Why Can't I See That Galaxy?

#8

Post by bladekeeper » Sun Oct 13, 2019 4:52 pm

So glad you brought this over. A much cited and linked to resource for the budding galaxy hunter. I still recall after first reading it how things began to click in my mind. My galaxy hunting exploded in productivity after that. Thanks, Alan. :)
Bryan
Scopes: Apertura AD12 f/5; Celestron C6-R f/8; ES AR127 f/6.4; ES AR127 f/9.4; Stellarvue SV102T f/7; ES AR102 f/9.8; iOptron MC90 f/13.3; Orion ST80A f/5; Celestron Premium 80 f/11.4; Celestron C80 f/11.4; Unitron Model 142 f/16; Meade NG60 f/10
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Re: Why Can't I See That Galaxy?

#9

Post by kt4hx » Sun Oct 13, 2019 9:28 pm

AntennaGuy wrote:
Fri Oct 11, 2019 9:16 pm
Very helpful. Thank you.
My pleasure and hope it makes your pursuit of galaxies easier and more enjoyable. :)
Alan

Astro Sky 17.5 f/4.5 Dob || Apertura AD12 f/5 Dob || Zhumell Z10 f/4.9 Dob
ES AR127 f/6.5 & ED80 f/6 on Twilight-II || Apertura 6" f/5 Newtonian on Twilight-I
ES 82° 24mm, 18mm; Pentax XW 70° 10mm, 7mm, 5mm + 2 inch and 1.25 inch Barlows
DGM NPB Filter || Orion Ultra Block, O-III and Sky Glow Filters || Baader HaB Filter
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"Astronomers, we look into the past to see our future." (me)
"What we know is a drop, what we don't know is an ocean." (Sir Isaac Newton)
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Re: Why Can't I See That Galaxy?

#10

Post by kt4hx » Sun Oct 13, 2019 9:38 pm

bladekeeper wrote:
Sun Oct 13, 2019 4:52 pm
So glad you brought this over. A much cited and linked to resource for the budding galaxy hunter. I still recall after first reading it how things began to click in my mind. My galaxy hunting exploded in productivity after that. Thanks, Alan. :)
Thank you very much for your kind comments Bryan. I recall seeing it many times in posts you made suggesting it as reading for folks over at the other site. I figured it was time to drop a copy of it over here where it can be accessed easily. I made a few tweaks here and there, but basically it is the same article.

I easily recall when you were starting out as an observer and seemed to take a shine to galaxies in particular. I believe we had a few discussions early on regarding that very subject. You have become a artful galaxy hunter whose skills I highly regard and am happy to call my friend. :)
Alan

Astro Sky 17.5 f/4.5 Dob || Apertura AD12 f/5 Dob || Zhumell Z10 f/4.9 Dob
ES AR127 f/6.5 & ED80 f/6 on Twilight-II || Apertura 6" f/5 Newtonian on Twilight-I
ES 82° 24mm, 18mm; Pentax XW 70° 10mm, 7mm, 5mm + 2 inch and 1.25 inch Barlows
DGM NPB Filter || Orion Ultra Block, O-III and Sky Glow Filters || Baader HaB Filter
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"Astronomers, we look into the past to see our future." (me)
"What we know is a drop, what we don't know is an ocean." (Sir Isaac Newton)
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Re: Why Can't I See That Galaxy?

#11

Post by Bigzmey » Sun Oct 13, 2019 10:13 pm

Great article Alan! A must read for any starting galaxy hunter. M74 was toughest for me to crack out of all Messiers. Took me a dozen times, until I finally resolved it with 8" SCT from Anza.
Scopes: Stellarvue: SV102 ED F7; Celestron: 8" SCT F10, Omni 150R Achro F5, Onyx 80ED F6.3, Mak 127mm F12; Meade: ST80 F5. Mounts: ES Twilight I, Bresser EXOS2, SW SkyTee2, AzGTi, UA MicroStar. Binos: Orion 15x70, 10x50, Nikon 8x40. EPs: Pentax: XWs; TeleVue: Delites, Plossls & barlows; ES: 68s; Vixen: SLVs; Baader: BCOs, Aspherics, Mark IV; Meade: UWAs & Plossls. Diagonals: Baader: BBHS mirror, Zeiss Spec prism, Clicklock; TeleVue: Evebrite. Filters: Lumicon, Baader, Astronomik. DSO tally: 1564 (Completed: M110, H1, H2. In progress: H3: 179, H2,500: 1156, S110: 77). Doubles: 859, Comets: 13, Asteroids: 62
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Re: Why Can't I See That Galaxy?

#12

Post by kt4hx » Sun Oct 13, 2019 11:04 pm

Bigzmey wrote:
Sun Oct 13, 2019 10:13 pm
Great article Alan! A must read for any starting galaxy hunter. M74 was toughest for me to crack out of all Messiers. Took me a dozen times, until I finally resolved it with 8" SCT from Anza.
Thank you Andrey. M74 is indeed a challenge for many. Its face-on orientation and resulting lower surface brightness makes it more difficult. While I can routinely see it from our typically Bortle 5 backyard with the 10 inch, I have not tried with anything smaller there. I have suspected it in my 10x50 binoculars from about a Bortle 4 location and want to try for it at our dark site (Bortle 2 to 3, variably). At our dark site I have seen subtle spiral structure with the 10 inch. Overall, from any given location, I find it easier than M101. M33 I find easily even with my 10x50s from locations that I would typically observe from (Bortle 5 or darker). A factor in that of course is experience, which also includes perspective. The most difficult time we typically have finding any object is the first time. We lack that perspective of exactly how it will appear to us, and thus we can many times simply not notice it. :)
Alan

Astro Sky 17.5 f/4.5 Dob || Apertura AD12 f/5 Dob || Zhumell Z10 f/4.9 Dob
ES AR127 f/6.5 & ED80 f/6 on Twilight-II || Apertura 6" f/5 Newtonian on Twilight-I
ES 82° 24mm, 18mm; Pentax XW 70° 10mm, 7mm, 5mm + 2 inch and 1.25 inch Barlows
DGM NPB Filter || Orion Ultra Block, O-III and Sky Glow Filters || Baader HaB Filter
---------------------------------------------------------------------------
"Astronomers, we look into the past to see our future." (me)
"What we know is a drop, what we don't know is an ocean." (Sir Isaac Newton)
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