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Equipment Discussions >> Refractors

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Glen A W
professor emeritus


Reged: 07/04/08

Loc: USA
Re: SW 100: Will I notice Difference? new [Re: Eddgie]
      #6178259 - 11/05/13 09:49 PM

I had a 102 before since 1998, now the 100, on the same mount - a 1990 Vixen Regular Polaris. The 100 is far superior. On Jupiter, there is simply no comparison. Saturn, not so much difference, though maybe the 102 was a little brighter. On deep sky, not much difference, but the 100 is shorter and it helps with the field, a little. Also, the stars are just so pure, and pinpoint. Fields with bright stars look far better.

On the Moon - now that's a tough question. The 100 has far less color, but oddly, the 102 was better around the more full phases. Hard to explain why - maybe the CA made the white rings of highly-lit craters stand out, or maybe the 102 actually has slightly better contrast.

I have not used the 102 much since I got the 100. The 100 is a fine scope. The 102 is a very good scope for what I paid, and sharper than a razor blade, but the CA kept it from being what it could be. I can fit both in the same tube rings, though the diameter is not quite exactly the same. Keep in mind my 102 is an old one.

GW

Edited by Glen A W (11/05/13 09:50 PM)


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Glen A W
professor emeritus


Reged: 07/04/08

Loc: USA
Re: SW 100: Will I notice Difference? new [Re: Glen A W]
      #6178263 - 11/05/13 09:51 PM

I would also point out that the price of the 100 is incredible for what you get. When I was a kid, I could only dream of such a scope - it was totally out of reach, then. GW

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BillP
Postmaster
*****

Reged: 11/26/06

Loc: Vienna, VA
Re: SW 100: Will I notice Difference? new [Re: jrbarnett]
      #6178830 - 11/06/13 09:21 AM

Quote:

I love 'em all, but I could comfortably observe for the rest of my days with a quality 5-incher. I can't say the same for a 4-incher, though.




Because these birthday things keep happening for me, I was wondering similar, if I will stay happy with a 4-incher until the end or if a larger is one day in order. But given the perceived boost in performance that happens with binoviewing, I'm considering just switching to that full time when too many birthdays have past. Plus I can never ever see myself with just one scope. So will always have a small 80mm or the like for daytime and occassional night time use or travel use, will always have the larger 4" APO, and will always have a larger light bucket for when those needs arise, like an 8". So given that an 8" is likely to forever be in the mix, hard for me to think about giving up the supreme convenience of a 4". Maybe compromise...a 115mm might me the perfect solution to the 4" or 5" puzzle


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saemark30
Pooh-Bah


Reged: 02/21/12

Re: SW 100: Will I notice Difference? new [Re: BillP]
      #6179407 - 11/06/13 02:39 PM

If you like the 102mm then the 150mm f/8 achromat might be a good upgrade path. It has a big wow factor for me and the dream of a 6" within reach is here.
No CA problems, just a hairline for bight objects, though I haven't seen Jupiter or Venus.


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Mike4242
Pooh-Bah


Reged: 11/02/11

Loc: Memphis, TN
Re: SW 100: Will I notice Difference? new [Re: saemark30]
      #6179451 - 11/06/13 03:04 PM

Quote:

I love 'em all, but I could comfortably observe for the rest of my days with a quality 5-incher.




I've found my own personal telescope Nirvana with my 127ED. To me it's the perfect balance of performance, portability, and maintenance.


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jrbarnett
Eyepiece Hooligan
*****

Reged: 02/28/06

Loc: Petaluma, CA
Re: SW 100: Will I notice Difference? new [Re: BillP]
      #6179532 - 11/06/13 03:55 PM

Bill, if I win the lottery I will buy you a TSA-120. I think that scope is the perfect solution, really. It's much lighter than the fatty TOAs, and only a little smaller than the TOA-130. As the years pile on here, too, I'm thinking of down-sizing to a TSA-120 myself as my big refractor, keeping only an 80mm of some sort for dual daytime, grab & go night time use and then a single mid-sized reflector (12-13") for my dark site deep sky stuff.

Loading and unloading and setting up and taking down is increasingly bringing out aches and pains. I think that's me telling me that bigger probably isn't better.

- Jim


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jrbarnett
Eyepiece Hooligan
*****

Reged: 02/28/06

Loc: Petaluma, CA
Re: SW 100: Will I notice Difference? new [Re: Mike4242]
      #6179535 - 11/06/13 03:56 PM

Same goes for you Mike. If I win the Lotto, so do you. TSA-120s all around.

- Jim


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NHRob
Post Laureate
*****

Reged: 08/27/04

Loc: New Hampshire
Re: SW 100: Will I notice Difference? new [Re: jrbarnett]
      #6179540 - 11/06/13 04:01 PM

I'm there already. The TSA-120 is my choice to retire with. Unfortunately can't swing it just yet.

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snommisbor
scholastic sledgehammer
*****

Reged: 06/15/09

Loc: Cedar Park, TX
Re: SW 100: Will I notice Difference? new [Re: jrbarnett]
      #6179557 - 11/06/13 04:09 PM

Quote:

Same goes for you Mike. If I win the Lotto, so do you. TSA-120s all around.

- Jim




I just wanted to be on the record for participating on this thread in case Jim wins the lottery.


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Rutilus
Carpal Tunnel


Reged: 12/17/10

Re: SW 100: Will I notice Difference? new [Re: snommisbor]
      #6179600 - 11/06/13 04:38 PM Attachment (18 downloads)

Yes you can see quite a bit with a small scope, but I would rather go with a bigger aperture when it is available.
I had some good views of Mars with my TSA-102, but the next day my eyes did suffer after those small exit pupils.

Here is two drawings made with my 60mm refractor, at the time Mars was around 6 arc seconds in size.


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Mike4242
Pooh-Bah


Reged: 11/02/11

Loc: Memphis, TN
Re: SW 100: Will I notice Difference? new [Re: Rutilus]
      #6179649 - 11/06/13 05:07 PM

Quote:

Same goes for you Mike. If I win the Lotto, so do you. TSA-120s all around.





Woohoo! You need be buying up some lottery tickets.


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pdxmoon
scholastic sledgehammer
*****

Reged: 06/27/13

Loc: Oregon
Re: SW 100: Will I notice Difference? new [Re: snommisbor]
      #6179936 - 11/06/13 08:16 PM

Hey! I'm the OP! I get a 120 too!

Quote:

Quote:

Same goes for you Mike. If I win the Lotto, so do you. TSA-120s all around.

- Jim




I just wanted to be on the record for participating on this thread in case Jim wins the lottery.




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BillP
Postmaster
*****

Reged: 11/26/06

Loc: Vienna, VA
Re: SW 100: Will I notice Difference? new [Re: jrbarnett]
      #6180563 - 11/07/13 09:09 AM

Quote:

Bill, if I win the lottery I will buy you a TSA-120.




I am adding this thread to my Favorites list


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jrbarnett
Eyepiece Hooligan
*****

Reged: 02/28/06

Loc: Petaluma, CA
Re: SW 100: Will I notice Difference? new [Re: BillP]
      #6180820 - 11/07/13 11:29 AM

See, with all this good Karma and collective psychic support, how can I miss? I think I'll start buying up multi-state Powerball tickets.

Oh, and if I win more than $100 million, you'll have to tell me what you all want yours mounted on.

- Jim


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SimonL
member


Reged: 09/17/07

Re: SW 100: Will I notice Difference? new [Re: jrbarnett]
      #6180892 - 11/07/13 12:04 PM

Yes the 100ED will be sharper and more contrasty.
I would add a good dob for deep sky views such as a 12" size with Zambuto mirror which is refractor like in performance.


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BillP
Postmaster
*****

Reged: 11/26/06

Loc: Vienna, VA
Re: SW 100: Will I notice Difference? new [Re: jrbarnett]
      #6181389 - 11/07/13 04:22 PM

Quote:

Oh, and if I win more than $100 million, you'll have to tell me what you all want yours mounted on.




As long as we are dreaming, I'd probably opt for the current gen Super Half Hitch with tracking and all the other options and Super Tripod.


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BKBrown
Post Laureate
*****

Reged: 08/23/09

Loc: Northern Virginia, USA
Re: SW 100: Will I notice Difference? [Re: BillP]
      #6181487 - 11/07/13 05:14 PM

Quote:

Quote:

Oh, and if I win more than $100 million, you'll have to tell me what you all want yours mounted on.




As long as we are dreaming, I'd probably opt for the current gen Super Half Hitch with tracking and all the other options and Super Tripod.




Sweeeeet!

Clear Skies,
Brian


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Scott BeithAdministrator
SRF
*****

Reged: 11/26/03

Loc: Frederick, MD
Re: SW 100: Will I notice Difference? new [Re: jrbarnett]
      #6181579 - 11/07/13 05:57 PM

Quote:

Same goes for you Mike. If I win the Lotto, so do you. TSA-120s all around.

- Jim




Dangerous words my friend!
You can give mine to someone else. I am fine in that range.
I do have dibs on your SV80S LOMO though...


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jrbarnett
Eyepiece Hooligan
*****

Reged: 02/28/06

Loc: Petaluma, CA
Re: SW 100: Will I notice Difference? new [Re: Scott Beith]
      #6181696 - 11/07/13 07:35 PM

LOL!

Tell you what Scott. If I end up biting on one of the made-to-order custom jobby SV80S LOMOs that Stellarvue is offering, I'll make you a deal on the old one that you simply can't refuse. I fixed it up. The dew shade is solid. The bent set screw has been replaced, and Starlight provided a free replacement knob due to the UV damage on the original. I did the best I could on the differentially fading paint on the tube and dew shade (likely because the saggy dew shade stayed retracted covering the tube). I used premium German acrylic polish with a high carnuba wax over it. It still has a few little love dents, though.

But the glass and focuser work well.

- Jim


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jag767
professor emeritus
*****

Reged: 06/20/13

Loc: Massapequa, NY
Re: SW 100: Will I notice Difference? new [Re: jrbarnett]
      #6181706 - 11/07/13 07:39 PM

Quote:

See, with all this good Karma and collective psychic support, how can I miss? I think I'll start buying up multi-state Powerball tickets.

Oh, and if I win more than $100 million, you'll have to tell me what you all want yours mounted on.

- Jim




Thanks Oprah


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