Discuss your refractor type scopes here.
Achromat Vs Semi-APO Vs APO - What's The Difference?
Replies: 21
by
JayTee »
Sat Aug 17, 2019 9:58 pm
First post
The notion for this article hit me this morning as I was perusing my email Astro-Ads .
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A triplet, or doublet plus singlet, allows to make a well corrected light gathering lens system with a higher speed, than the ED doublets.
21 Replies
9210 Views
Last post by j.gardavsky
Fri May 29, 2020 5:20 pm
120mm f/8.3 achromat adjust lens
Replies: 12
by
Jones »
Thu Aug 13, 2020 6:25 am
First post
Got the Orion version used locally. First look at the moon showed a yellow haze eveywhere. Have not had an achro in years, everyone talks about a...
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I normally use Aluminium foil (tin foil for some).
12 Replies
317 Views
Last post by Lady Fraktor
Wed Sep 23, 2020 6:20 pm
Historical 120x20 refractor
Replies: 2
by
DeanD »
Fri Sep 18, 2020 2:02 pm
First post
Hi all,
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Nice!
2 Replies
102 Views
Last post by notFritzArgelander
Fri Sep 18, 2020 6:18 pm
Altair Starwave 152 red tube
Replies: 6
by
Mack41 »
Sat May 16, 2020 9:46 am
First post
Took delivery of this a couple of days ago and not really had the weather to test it out properly.
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It looks fantastic: still waiting for a report though!
6 Replies
554 Views
Last post by DeanD
Fri Sep 18, 2020 9:34 am
130mm Truss Tube Refractor
Replies: 21
by
Jones »
Tue Aug 04, 2020 5:37 pm
First post
Uses the 130mm f/7 -53 triple from TS Optics Germany.
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The limit of the M2 blockhead mount and column appears to be with the 120mm light weights f8.3 achromat 1000mm f.l. and f7.5 SWed 900mm f.l. They...
21 Replies
1059 Views
Last post by Jones
Sat Aug 29, 2020 5:26 am
Do you recognise this vintage 80mm/910mm f/11,3 refractor?
Replies: 17
by
West83 »
Wed Aug 12, 2020 11:02 pm
First post
Does anybody recognize this D=80mm F=910mm (f/11,3) refractor?
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If the finder is mounted on the focuser its a C80 made by Vixen Japan for Celestron in the late 80’s to mid 90’s ! If its in good shape grab it quick...
17 Replies
732 Views
Last post by LDW47
Sun Aug 23, 2020 1:50 pm
Behold the Mark mk. II
Replies: 9
by
Kanadalainen »
Fri Aug 14, 2020 9:08 pm
First post
The scope is unchanged but I drilled the 76 mm rings that I had lying around, and tapped them for 1/4 x 20.
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Good for you Ian!
9 Replies
350 Views
Last post by Thefatkitty
Mon Aug 17, 2020 12:20 am
Comparing APO refractors: doublets vs triplets, makes & models, etc.
Replies: 16
by
Voyageur »
Sun Aug 09, 2020 3:47 pm
First post
My 8 Vixen VMC200L and Astro Tech AT80EDT complement each other very well. The Vixen gives great views of nebulae, globs, and open clusters. I...
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As you know I own a 120mm Evostar APO. And I had a 120mm f/8 achromat in my possession very shortly.
16 Replies
509 Views
Last post by John Baars
Thu Aug 13, 2020 10:56 pm
A 150mm f/5 Achromat stopped down on Jupiter, just for fun.
Replies: 13
by
John Baars »
Wed Jun 24, 2020 8:34 pm
First post
Everybody knows it. A 150mm Achromat is a widefield telescope with terrible CA. Certainly not suited for observing Jupiter.
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This is a very good scope for a very good price! It could compliment nicely your 6 SCT. SCT would have an edge on Moon and planets, but 150ST would...
13 Replies
651 Views
Last post by Bigzmey
Wed Aug 12, 2020 6:23 pm
Time to sell?
Replies: 10
by
pakarinen »
Tue Aug 11, 2020 4:58 pm
First post
When I got back into the hobby three years ago, I decided my old C8 and mount was too big and bulky for my current tastes and went with an Orion...
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Good points to ponder. Thanks, everybody.
10 Replies
288 Views
Last post by pakarinen
Wed Aug 12, 2020 12:50 pm
Refractor Photo Thread (everyone loves pictures)
Replies: 50
by
Rainmaker »
Tue Dec 10, 2019 12:34 am
First post
:observer: Here is a place to post some pictures of your refractors :observer:
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A unique refractor.
50 Replies
3962 Views
Last post by Lady Fraktor
Tue Aug 11, 2020 3:22 am
Mark I and the Big Gun
Replies: 5
by
Kanadalainen »
Tue Jul 14, 2020 2:47 pm
First post
Big Gun? Maybe not. :D :lol: But at 910mm focal length, my vintage C80 doublet is much more to wield for my HEQ5 mount, vs the 70mm triplet.
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Looking good!
5 Replies
419 Views
Last post by Bigzmey
Wed Jul 15, 2020 10:47 pm
the Teleskop Service 102mm ED f11
Replies: 35
by
notFritzArgelander »
Sun May 03, 2020 8:57 pm
First post
My plan as of 3 years ago was to have a pair of quality refractors that are ED doublets. I like to be able to DIY optical maintenance so triplets are...
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I heard from Gerd Neumann that the gratings are in the mail.
35 Replies
1797 Views
Last post by notFritzArgelander
Wed Jul 15, 2020 12:09 am
First light for the Mark I - Tasco
Replies: 9
by
Kanadalainen »
Thu Jul 09, 2020 3:21 pm
First post
Scope test: 60 mm Tasco doublet, 80's Celestron star diagonal, 80's Meade super plossl EP 40 mm
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As promised M8 and M20 - can also be found in the AP section - a busier place.
9 Replies
313 Views
Last post by Kanadalainen
Fri Jul 10, 2020 1:27 pm
I Now Own A 6" Aperture Refractor
Replies: 12
by
Refractordude »
Tue Jun 30, 2020 4:31 am
First post
It is a Celestron 6 f8 known as the yard canon. I was actually surprised that it is not that big nor heavy. I have it mounted on a Orion Skyview Pro...
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That's a big boy!
12 Replies
581 Views
Last post by Refractordude
Thu Jul 02, 2020 2:04 am
Question For 6" Achromatic Owners
Replies: 5
by
Refractordude »
Thu Jun 18, 2020 5:15 pm
First post
What 6 achromatic telescope do you own? How do you bring out the colors when observing globular clusters at high magnification? My thinking is that...
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In my 6 achro I have not seen colors in globular clusters. I have noticed spectacular differences in color with open clusters, e.g., Beehive, M52,...
5 Replies
400 Views
Last post by notFritzArgelander
Fri Jun 26, 2020 6:12 pm
Thanks Mark!
Replies: 8
by
Kanadalainen »
Fri Jun 26, 2020 2:22 am
First post
Today I recieved a reworked Tasco 55 VTE from Mark. It arrived safe and sound.
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Very interesting scope. Nice transaction guys.
8 Replies
271 Views
Last post by helicon
Fri Jun 26, 2020 2:06 pm
APM 107 ..I can dream, right?
Replies: 9
by
Kanadalainen »
Tue May 28, 2019 4:55 pm
First post
Has anyone ever peeked through one of these? They appear to be very nice indeed.
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i was going to ask how many arms and legs, then i've seen the price at the bottom.i guess more then i thought, the whole 9 yards :Lol:
9 Replies
1342 Views
Last post by yobbo89
Wed Jun 24, 2020 1:32 pm
This Guy Must Really Like His 6" F8 Scope To Shake
Replies: 4
by
Refractordude »
Sun Jun 21, 2020 12:24 am
First post
Please correct me if I am wrong. Right click the image.
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It looks like the tripods is tightened up quite well. I imagine it would hum like a guitar string if tapped.
4 Replies
357 Views
Last post by Lady Fraktor
Mon Jun 22, 2020 4:15 pm
Globular Clusters And Telescopes?
Replies: 9
by
Refractordude »
Fri Jun 05, 2020 10:24 pm
First post
What is the best telescope for globular clusters? Thanks to you all.
Last post
However one of the most stunning visual astronomy experiences I had was with a 1 meter RC at 600x.
9 Replies
553 Views
Last post by notFritzArgelander
Sat Jun 06, 2020 11:09 pm
Small aperture, long focal length refractors
Replies: 8
by
Lady Fraktor »
Sun May 17, 2020 7:15 pm
First post
I posted this at AF.net a couple of years ago and thought it would be good to bring over here.
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Hi Gabrielle,
8 Replies
582 Views
Last post by terrynak
Sun May 24, 2020 8:46 pm
Skywatcher Pro 120 ED - upgrade from 100
Replies: 3
by
Ben Cartwright SASS »
Sun May 10, 2020 7:04 pm
First post
While I liked my SW Evostar 100 the f/9 bothered me for a couple reasons, first it is slower than my Lunt ED102 achro f/7 so the frame rate on proms...
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Congratulations on the Evostar!
3 Replies
308 Views
Last post by John Baars
Tue May 12, 2020 8:03 pm
Apogee 152mm Refractor questions
Replies: 8
by
Ben Cartwright SASS »
Fri May 01, 2020 3:13 pm
First post
A friend of mine is giving me an Apogee 152mm refractor. He hasn't used it in a while and wants to get rid of it. He said the last time he used it,...
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OT: Geez, I wish I had friends like yours!
8 Replies
382 Views
Last post by pakarinen
Sat May 02, 2020 12:10 pm
SW 80mm Achromat F 11.4
Replies: 8
by
NGC 1365 »
Fri Apr 10, 2020 12:38 pm
First post
I Borrowed an 80mm SW achromat (F11.4) from a friend to test it out and to compare it to my Orion ED 80 (F7.5). I wasn't expecting much from it, it...
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Sounds like a nice evening and a successful outing to make a comparison Ivan.
8 Replies
641 Views
Last post by helicon
Thu Apr 16, 2020 4:33 pm
A Cell Phone Telescope
Replies: 16
by
Refractordude »
Thu Mar 12, 2020 4:02 pm
First post
Has anyone tried this device. It attaches to a cell phone and can get 8400 mag. The cost is $40.
Last post
Interesting though not to the standards of the over marketted device under discussion :)
16 Replies
1234 Views
Last post by Lady Fraktor
Fri Mar 13, 2020 4:15 pm
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