Jump to content

  •  

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Photo

The Skywatcher 100 ED APO thread ...

refractor
  • Please log in to reply
135 replies to this topic

#101 BKBrown

BKBrown

    Skylab

  • *****
  • Posts: 4,480
  • Joined: 22 Aug 2009
  • Loc: Under dark skies in central Virginia, USA

Posted 31 December 2019 - 03:51 PM

The 100ED scopes are much under-rated for imaging. I have used my SW 100ED Pro for lunar, planetary, solar, and deep sky imaging and have found it to be quite serviceable. Color correction can be improved by mono imaging, focusing each filter separately, B&W is even easier. Of course three element apos have advantages in the color correction department, but I recommend folks who take an interest in imaging and already have an ED scope try it first. Below are a couple of modest examples of what can be done with a 100ED:

 

post-85088-0-29939500-1428100964_thumb.jpg

 

M27_ Carboni v1.jpg

 

You can see some violet around stars in the M27 image because I used a color DSLR, mono imaging with filters would have helped.

 

Clear Skies,

Brian snoopy2.gif


Edited by BKBrown, 31 December 2019 - 03:58 PM.

  • Jacques, Scott Beith, Rollo and 12 others like this

#102 Tyson M

Tyson M

    Skylab

  • *****
  • Posts: 4,003
  • Joined: 22 Jan 2015
  • Loc: Alberta, Canada

Posted 31 December 2019 - 04:01 PM

Recent observing report here with one of these scopes.

 

https://www.cloudyni...join-us/page-35


  • Jond105 likes this

#103 Jond105

Jond105

    Aurora

  • *****
  • Moderators
  • Posts: 4,767
  • Joined: 19 Feb 2018
  • Loc: Detroit

Posted 31 December 2019 - 04:03 PM

This was shot with my Orion 100ED last winter and an iPhone XR. Obviously with the CG4 tracking and nightcap app. But was amazed at what it did. 

Attached Thumbnails

  • F1CE7E0F-5F41-45E7-B40F-1B644339D8B5.jpeg
  • 270B3295-4D20-4F5D-8D8E-9DDA3CAA3A50.jpeg

  • Jacques, Scott Beith, eros312 and 5 others like this

#104 The Luckster

The Luckster

    Viking 1

  • *****
  • Posts: 781
  • Joined: 12 May 2017
  • Loc: Los Angeles, CA

Posted 01 January 2020 - 12:50 PM

Question:  I would like to maximize the FoV with my 100, so I am considering about adding a William Optics 40mm which would bump the SW 100ED f/9 TFoV to 3.10 degrees as opposed to my ES82 30mm's 2.73 degree TFoV.  I assume the WOs edge performance is not too bad at f/9, but I would like to hear from any of you who have used (or use) this combo and what your results are.

 

Thanks!

 

CS

 

jason



#105 Jond105

Jond105

    Aurora

  • *****
  • Moderators
  • Posts: 4,767
  • Joined: 19 Feb 2018
  • Loc: Detroit

Posted 01 January 2020 - 12:57 PM

Great question, Jason. I’m also interested as my lowest power is as well the ES82 30mm, I’ve always wondered if going lower and wider gains much with how well the 30mm eyepiece is. 


  • The Luckster likes this

#106 BillP

BillP

    Hubble

  • *****
  • Posts: 19,080
  • Joined: 26 Nov 2006
  • Loc: Spotsylvania, VA

Posted 06 January 2020 - 08:23 PM

This is an outstanding telescope, I routinely use it at 250x on the Moon and double stars.

I have the Celestron XLT version of this scope and was just out binoviewing the Moon at 310x using 9mm Morpheus with Barlow element from my APM 2.7x Barlow as the OCA on the WO Binoviewers (gives 3.1x with Binoviewer's glasspath).  Amazingly beautiful at this magnification and all the features sharp and etched.  These scopes make such a wonderful lunar explorer and nothing better with the Moon than binoviewing.  If my hands didn't freeze could have stayed out all night.


Edited by BillP, 06 January 2020 - 08:24 PM.

  • Daniel Mounsey, Lewis Cason, Bomber Bob and 3 others like this

#107 Daniel Mounsey

Daniel Mounsey

    Vendor (Woodland Hills)

  • *****
  • Vendors
  • Posts: 7,707
  • Joined: 12 Jun 2002

Posted 06 January 2020 - 11:46 PM

it's about freaking time you froze!!!


  • mikeDnight likes this

#108 RadioAstronomer

RadioAstronomer

    Mariner 2

  • *****
  • Posts: 266
  • Joined: 13 Jun 2018
  • Loc: Tucson, AZ

Posted 06 January 2020 - 11:59 PM

Thanks. My mind keeps wondering about going that route. 
 

Last night I had the scope out during twilight on Venus to do a thorough check of the optics. Even hooked up the CG4 for a change. The optics on this one are very good as well. Perfect Collimation. Color correction in my eyes wasn’t showing false color on Venus. I keep going back and forth on what to do. Sell it all, upgrade back to the 120ED, but I think I’m going to keep this sample for the long haul. I keep going back to them. I’m sure I’ll still get a 120ED sometime in the future. Or something different. I don’t know. But I love the 100ED. And the moonlite is an added bonus. 

I say keep it! As the previous owner of that sample I can attest to the quality of the optics!


  • Jond105 likes this

#109 Lookitup

Lookitup

    Mariner 2

  • *****
  • Posts: 259
  • Joined: 29 Jul 2016
  • Loc: Florida

Posted 07 January 2020 - 12:00 AM

Once I got the Moonlite, did a little direct comparison between Tak DF and Orion ED100. Mag. was x140 and x207 in the ED, x120 and x170 in the Tak. They complemented each other perfectly. Quality focuser makes a difference in getting rid of any excess red in focus.  


  • 25585 likes this

#110 Jond105

Jond105

    Aurora

  • *****
  • Moderators
  • Posts: 4,767
  • Joined: 19 Feb 2018
  • Loc: Detroit

Posted 07 January 2020 - 12:05 AM

I say keep it! As the previous owner of that sample I can attest to the quality of the optics!

I had it out again tonight for a bit. I appreciate you putting that moonlite on it. It is a fine scope with it. Would I really sell off another one??? Hope not. 

Attached Thumbnails

  • 8917BA28-5C96-4AE6-ACE8-D0CC44A65ACB.jpeg

  • Scott Beith, Rollo, TL2101 and 4 others like this

#111 25585

25585

    Fly Me to the Moon

  • *****
  • Posts: 7,110
  • Joined: 29 Aug 2017
  • Loc: In a valley, in the UK.

Posted 07 January 2020 - 11:38 AM

Once I got the Moonlite, did a little direct comparison between Tak DF and Orion ED100. Mag. was x140 and x207 in the ED, x120 and x170 in the Tak. They complemented each other perfectly. Quality focuser makes a difference in getting rid of any excess red in focus.  

My 100 Equinox v Tak DL. The Tak wins as magnifications go higher, but considering the vast price difference, Equinox's ED lenses v prime fluorite give very good performance. And my 120 Equinox is only beaten by my Tak TSA 120 triplet.    


  • beanerds and Lookitup like this

#112 Lookitup

Lookitup

    Mariner 2

  • *****
  • Posts: 259
  • Joined: 29 Jul 2016
  • Loc: Florida

Posted 07 January 2020 - 12:40 PM

My 100 Equinox v Tak DL. The Tak wins as magnifications go higher, but considering the vast price difference, Equinox's ED lenses v prime fluorite give very good performance. And my 120 Equinox is only beaten by my Tak TSA 120 triplet.    

Noticed the same a few times at x240 in direct comparison with the DF. Steady skies are required, which is quite rare for me. Saw no difference comparing Orion, double's and planets are little more defined in the Tak. The SW ED's are excellent values.


  • mikeDnight, The Luckster and 25585 like this

#113 BillP

BillP

    Hubble

  • *****
  • Posts: 19,080
  • Joined: 26 Nov 2006
  • Loc: Spotsylvania, VA

Posted 07 January 2020 - 04:25 PM

it's about freaking time you froze!!!

Yes....well I was out in my robe and slippers again too, but only the hands were getting cold.  I go out any time and usually just dressed as I am.  I like no-prep observing lol.gif


  • mikeDnight likes this

#114 Trevor N

Trevor N

    Vostok 1

  • -----
  • Posts: 188
  • Joined: 06 Feb 2014
  • Loc: England

Posted 07 January 2020 - 06:42 PM

This thread has made me look back over my images taken with the ED100. It really has been my most used scope and like many others here I won’t be parting with it ! The 100’s and 120’s seem to hit a sweet spot for me. I’ve owned a 150 but found it too big and cumbersome with very little if any gain in quality. We all have different preferences but the 100 has probably been my favourite scope. 

some images attached.

Attached Thumbnails

  • 2EAE56A6-0DBE-4C54-9A33-5BEF9E643540.jpeg
  • 664C3C77-A157-426F-BC1F-0980DBFF27B8.jpeg
  • 24FE1F9E-08CC-47AE-A2A1-806E895166BB.jpeg
  • CDCB451E-3539-44C0-BE03-3E555C1B2A52.jpeg
  • 0AA307C9-30A8-46CD-916F-DE84F3075F3D.jpeg

  • Jacques, Paul Schroeder, Scott Beith and 15 others like this

#115 The Luckster

The Luckster

    Viking 1

  • *****
  • Posts: 781
  • Joined: 12 May 2017
  • Loc: Los Angeles, CA

Posted 09 January 2020 - 09:40 PM

I am lovn' this 100ED f/9's views even with poor seeing conditions!

 

49346041388_63f5d6025b_c.jpg

 

 

CS

 

jason

 

 


  • Jacques, Scott Beith, Starman81 and 8 others like this

#116 tog

tog

    Surveyor 1

  • -----
  • Posts: 1,544
  • Joined: 17 Jan 2005
  • Loc: Front Yard

Posted 13 January 2020 - 04:27 PM

I want one!!

Guess what UPS just dropped off at my house? Now that SkyView Pro mount sitting in the corner will get put to use!


  • beanerds, eros312, The Luckster and 2 others like this

#117 ltj

ltj

    Lift Off

  • *****
  • Posts: 10
  • Joined: 07 Sep 2018
  • Loc: Southeastern Pa.

Posted 13 January 2020 - 08:08 PM

Hi guys! I came across this thread yesterday and even though I read it some months ago, read it again and was glad to see it was active. I picked up an Evostar 100 a few months ago and liked what I saw. Unfortunately it still has not seen first light due to health issues and perpetual clouds and rain here. I am so tired of "rainy day" astronomy in front of the computer!!!

Anyway, I've learned a lot from your postings and can't wait to put this scope to use. I found the discussions here encouraging and reinforcing what I had hoped the 100ED would give me. I hope this thread stays active,

Jeff

 

Clear skies!


  • tog, The Luckster and Jond105 like this

#118 Jond105

Jond105

    Aurora

  • *****
  • Moderators
  • Posts: 4,767
  • Joined: 19 Feb 2018
  • Loc: Detroit

Posted 14 January 2020 - 12:15 AM

I am lovn' this 100ED f/9's views even with poor seeing conditions!

 

49346041388_63f5d6025b_c.jpg

 

 

CS

 

jason

How alike or different are the views between the 100ED and 127 mak?



#119 The Luckster

The Luckster

    Viking 1

  • *****
  • Posts: 781
  • Joined: 12 May 2017
  • Loc: Los Angeles, CA

Posted 15 January 2020 - 09:02 PM

Question:  I would like to maximize the FoV with my 100, so I am considering about adding a William Optics 40mm which would bump the SW 100ED f/9 TFoV to 3.10 degrees as opposed to my ES82 30mm's 2.73 degree TFoV.  I assume the WOs edge performance is not too bad at f/9, but I would like to hear from any of you who have used (or use) this combo and what your results are.

 

Thanks!

 

CS

 

jason

At the risk of sounding like a broken record, I'm gonna bring this up again.  Any experiences with using a William Optics 40mm with a SW100ED (or any of the other Brand 100ED f/9s)?  That would be a third of a degree more FOV than the ES82 30, but is that third a degree worth it in the f/9?  If no experience, I'll let it pass.  Curious...and thank you.

 

cs

 

jason



#120 Tyson M

Tyson M

    Skylab

  • *****
  • Posts: 4,003
  • Joined: 22 Jan 2015
  • Loc: Alberta, Canada

Posted 15 January 2020 - 09:07 PM

At the risk of sounding like a broken record, I'm gonna bring this up again.  Any experiences with using a William Optics 40mm with a SW100ED (or any of the other Brand 100ED f/9s)?  That would be a third of a degree more FOV than the ES82 30, but is that third a degree worth it in the f/9?  If no experience, I'll let it pass.  Curious...and thank you.

 

cs

 

jason

Id keep your ES unless you do a lot of dark sky trips or have some extra money to spend.  I like the 31Nagler more than the 48mm Brandon for in town viewing based on the magnification range.  But for hard to detect extended nebula viewing at a dark site  (m45 nebulosity, veil, ect), the 40mm class eyepieces come out to play.

 

Also, for low power lunar viewing I like the 48 brandon more than the 31nagler, but I quickly switch it out for higher power eyepieces. 

 

To summarize, it is nice to have but not a major player at this exit pupil. 


  • The Luckster and Jond105 like this

#121 The Luckster

The Luckster

    Viking 1

  • *****
  • Posts: 781
  • Joined: 12 May 2017
  • Loc: Los Angeles, CA

Posted 15 January 2020 - 09:12 PM

Id keep your ES unless you do a lot of dark sky trips or have some extra money to spend.  I like the 31Nagler more than the 48mm Brandon for in town viewing based on the magnification range.  But for hard to detect extended nebula viewing at a dark site  (m45 nebulosity, veil, ect), the 40mm class eyepieces come out to play.

 

Also, for low power lunar viewing I like the 48 brandon more than the 31nagler, but I quickly switch it out for higher power eyepieces. 

 

To summarize, it is nice to have but not a major player at this exit pupil. 

Was never considering such, I was looking to ADD, hence the WO 40mm query.  Still, that's a Franklin and change I can spend elsewhere...

 

Thank you.

 

CS

 

jason


  • beanerds likes this

#122 Jond105

Jond105

    Aurora

  • *****
  • Moderators
  • Posts: 4,767
  • Joined: 19 Feb 2018
  • Loc: Detroit

Posted 15 January 2020 - 10:45 PM

Was never considering such, I was looking to ADD, hence the WO 40mm query.  Still, that's a Franklin and change I can spend elsewhere...

 

Thank you.

 

CS

 

jason

Im going to be getting out soon, I do have a new 40mm eyepiece. I was going to try it out in the 100ED. It’s only a plossl, but still  may give you some insight. My skies aren’t really that dark and I don’t have high hopes for it only being a plossl at 43 degrees. But wonder about the EP myself as well as is there any upside to maybe going wider in that range. But like Tyson, I doubt it. The ES30 is already a great sweeper at a decent magnification as well as fine EP. 


  • Tyson M likes this

#123 The Luckster

The Luckster

    Viking 1

  • *****
  • Posts: 781
  • Joined: 12 May 2017
  • Loc: Los Angeles, CA

Posted 16 January 2020 - 01:19 AM

How alike or different are the views between the 100ED and 127 mak?

It was not a good night for seeing conditions, so it wouldn’t be a fair comparison.  The Mak was outside for 3 hours, and the views were still chaotic.  I don’t think I’ll run the same dual mount setup in the future, since I was just over on max weight on the balance side.  If I do I’ll chime back.

 

CS

 

jason


  • beanerds and Lookitup like this

#124 Lookitup

Lookitup

    Mariner 2

  • *****
  • Posts: 259
  • Joined: 29 Jul 2016
  • Loc: Florida

Posted 16 January 2020 - 01:50 AM

Still comparing the Orion ED100 at x140 to my Tak DF at x170. Diminishing returns its what comes to mind, considering the 3-4 increase in cost. The ED could even handle x243 tonight with no issue.  The Tak seems to cut though atmosphere little easier with better CA correction, but it's so close waytogo.gif


  • 25585 likes this

#125 ascii

ascii

    Vanguard

  • -----
  • Posts: 2,053
  • Joined: 04 Jun 2016
  • Loc: Orlando, FL, USA Approximately 28.5ºN,81.5ºW

Posted 16 January 2020 - 04:01 AM

At the risk of sounding like a broken record, I'm gonna bring this up again.  Any experiences with using a William Optics 40mm with a SW100ED (or any of the other Brand 100ED f/9s)?  That would be a third of a degree more FOV than the ES82 30, but is that third a degree worth it in the f/9?  If no experience, I'll let it pass.  Curious...and thank you.

 

cs

 

jason

I use the Agena 38 mm SWA 70° In my 100 mm f/9 that I'm guessing is a very similar eyepiece to the William Optics.  At this price range you get some off-axis astigmatism, but it's not too bad.  I use mine for large open clusters.  It's just about perfect for the Pleiades. The cluster takes up the cleanest portion of the FOV and the remainder is context to really show off the cluster. I like the view even better than with my 22T4 Nagler where the cluster just fits, with no context.  I use it on clusters that are even much larger, like the Hyades and Mel 20 (a favorite). These are too large for to scope, but it's nice to get as much of them squeezed in as possible.


Edited by ascii, 16 January 2020 - 06:31 PM.

  • The Luckster and DeWynter like this


CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.


Recent Topics





Also tagged with one or more of these keywords: refractor



Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics