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Equipment Discussions >> Refractors

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desertrefugee
Pooh-Bah
*****

Reged: 08/06/07
Posts: 1221
Loc: Arizona
Re: Fun with a 50mm refractor. [Re: starrancher]
      #3426317 - 11/02/09 09:43 PM



--------------------
"Illimitable ocean, without bound, Without dimension, where length, breadth, and height, And time, and place are lost." - Milton

-Darrell

Reflectors - 76 to 305mm (f4.7 to f9.2)
Refractors - 50 to 120mm (f5 to f16.7)
Binoculars - 6x15 to 22x100

N. Phoenix, AZ



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starrancher
professor emeritus


Reged: 06/09/09
Posts: 620
Loc: Northern Arizona
Re: Fun with a 50mm refractor. new [Re: starrancher]
      #3438640 - 11/09/09 05:32 PM

Round three with the Tasco ! O.K. I received a few more vintage oculars (6mm , 9mm , & 22mm) from another CN member since my last posting & was able to grab a chance amongst a bunch of cloudy nights with the little 50 . M31 , & what a trip it was to see this thing in a small scope . Even in the suburban sky (red) , I was amazed at what I got ! Using the 20mm Huygens at 30 power , M31 was well framed in the field of view with the amount of light being grabbed . I was able to see M32 in the same field without much effort at all ! Simply awesome ! M110 was more difficult which I found strange because in larger apertures , M110 seems to be easier to I.D. than M32 . I does make sense to a certain extent though . (Another thread) . ..But with some panning of the scope & some averted vision , I was able to grab it . I've heard you can get both companions in good binoculars but other than the fact that I know I can't hold 'em steady enough , I gotta wonder about that .
Next it was time for me to nail down NGC869 & NGC884 , yep the famous Double Cluster . It took a couple tries for me to grab it as it's a little tough to use the severely stopped down finder that this scope sports & it was really easier just to sight down the edge of the finder & pan a little through the main objective . Alas , I was there & it was just so fun to see this object in such a small aperture & with more magnification than the binos' offer . Although dimmer at more than the 10x that my binos' push , the little 50 provided another unique view . I tried this dual object at 27x , 30x & 48x . All were nice but I think with this small aperture it looked best at 48x using the 12.5mm Huygens .
Finally , it was a re visit to M45 , & with my newly acquired 22mm Kellner , the entire cluster now fits in the field of view .
I am still amazed at the images that these badly talked about vintage oculars are producing . They sure seem to be working just fine so far !
I'll post again as the weather permits .

Dave

Edited by starrancher (11/09/09 05:41 PM)


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Swedpat
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Reged: 02/18/05
Posts: 1120
Loc: Boden, Sweden, Scandinavia
Re: Fun with a 50mm refractor. new [Re: starrancher]
      #3448210 - 11/14/09 05:53 PM

Yesterday night I was at a small starparty with some friends. Then I did my first real test of the sky with my Stellarvue SV50. Though I could soon notice that the sharpness wasn't comparable with my former Scopos 66mm ED APO the performance with 9x seemed to be at least comparable to my Swarovski 7x42. 20,5x provided a very nice image of the Pleiades. Using 41x the result wasn't that good.

I am not dissapointed at all. This small scope does it's job as I expected as a low powered comfortable alternative to a binocular. But I still thinking about how much better it could be if changed out the amici-prism to a usual prism or a mirror. I am sure that even 41x would work excellent.

Regards, Patric

--------------------
*2,3x40 Constellation View Wide-Bino
*Leupold 6x30 Yosemite
*Leupold Katmai 6x32
*Nikon Sporter I 8x36
*Swarovski SLCNew 7x42B
*Bresser (Lidl) 10x50
*Oberwerk 11x70
*Meade 5000 26mm Plössl, Vixen LV 10/5mm

Psalm 19:2


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starrancher
professor emeritus


Reged: 06/09/09
Posts: 620
Loc: Northern Arizona
Re: Fun with a 50mm refractor. new [Re: starrancher]
      #3450497 - 11/16/09 01:07 AM

Well , short rounds four & five came Saturday & Sunday nights for the little 50mm Tasco .
Saturday Night:
Out the gate was the open cluster M41 in Canis Major , sometimes called the "Little Beehive" . 30x magnifications was just right on the pleasingly bright sparse cluster . Since I was in the area I went ahead & slewed over to M47 in Puppis . This cluster is a nice little gem that looked great at 30X , but its' next door neighbor M46 was so dim , at first I wasn't sure I was bagging it . 30X was the best magnification on it but I gotta say it's not an impressive cluster in the small scope .
Mars was up & I wanted to check out the Beehive anyway , so I slung on over to the fourth rock & focused up at 120X . I didn't spend much time there but got a nicely defined crisp limb on the orange orb with a bit of surface mottling . I had a bit of a hard time tracking down M44 & ended up using Mars as a guide to it knowing that it was just passin' through last week . Panning a little , there it was in all its' brilliance filling the entire view of the scope at 27 power . What a nice , wide , bright cluster . That thing takes up the field of view of M45 & I don't recall that being the case when viewing it through larger scopes . It's funny how different things look through a small aperture .
Sunday Night:
I called it short & sweet as the first of the three objects that I added to the 50mm list was Albireo . With only 50mm to work with you just can't jam up a bunch of magnification & the separation in these two components was tight tight tight . I could barely get the fainter Blue component outside the diffraction ring of the brighter Orange component . Again , another completely different view of any Albireo I have ever seen . It almost makes me wonder if that is really what I was lookin' at . I fiddled with focus & eyepieces ranging 48X to 67X magnification & I'd say the cleaner view was at 48X . For my first Planetary Nebula through the little guy , we went to M27 , the "Dumbbell" . Sighting down the side of the finder scopes tube , I got into the general area , popped in the 20mm ocular at 30 power & started to pan . Then re directed , then panned ..., then re directed & panned again , & whoa , there it is ! It was faint , but what a gas ! (pardon the pun) . The Dumbbell really did best at no more than 48X magnification . Originally I had planned to grab M35 , M36 , M37 & M38 , but they would still be obscured for awhile , so I figured on callin' it quits early but not before one more . I told myself , you bag M15 & we'll call it .
I had to do a bit of panning & re directing with this one too . That stopped down finder scope really isn't much more than an ornament that sits on the scope & without any help from it & some cruising across , I found the fuzz . Yes the great M15 fuzzball in Pegusus ! My first Glob in the Tasco 50mm ! Yeehaww ! As well , the Glob did best between 30x & 48X . I'm used to pushin' 125x to 195x on this stuff but it's still "Fun with a 50mm refractor" !
I'll post again as I add more to the "Bagged It" list for the Tasco , & until then , I now return you to your regularly scheduled programming !


--------------------
LXD75 AR5
LXD75 SN8
Series 4000 Plossls
Misc. other stuff


Fort Rock , Az .


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David E
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Reged: 05/25/06
Posts: 3021
Loc: North Carolina
Re: Fun with a 50mm refractor. new [Re: starrancher]
      #3450771 - 11/16/09 08:26 AM

Great report! If I were you I'd ditch that optical finderscope and put on a red dot finderscope. Keep the optical as a suvenier of course.

--------------------
David E

If you keep a stack of old Orion catalogs in your bathroom, you might be an astro-redneck.



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starrancher
professor emeritus


Reged: 06/09/09
Posts: 620
Loc: Northern Arizona
Re: Fun with a 50mm refractor. new [Re: David E]
      #3450981 - 11/16/09 10:40 AM

Quote:

Great report! If I were you I'd ditch that optical finderscope and put on a red dot finderscope. Keep the optical as a suvenier of course.




Thanks Dave ! & your right , I'm thinking seriously about a red dot or maybe even rigging a green laser pointer into the stock finders bracket . It sure would make pointing easier .

--------------------
LXD75 AR5
LXD75 SN8
Series 4000 Plossls
Misc. other stuff


Fort Rock , Az .


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starrancher
professor emeritus


Reged: 06/09/09
Posts: 620
Loc: Northern Arizona
Re: Fun with a 50mm refractor. new [Re: starrancher]
      #3457115 - 11/19/09 02:18 PM

M35 , M36 , M37 & M38 ......Are in ....the bag !

And so ends round six .

--------------------
LXD75 AR5
LXD75 SN8
Series 4000 Plossls
Misc. other stuff


Fort Rock , Az .


Edited by starrancher (11/19/09 02:19 PM)


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Doug76
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Reged: 12/05/07
Posts: 5574
Loc: SE Louisiana, future Texan
Re: Fun with a 50mm refractor. new [Re: starrancher]
      #3457191 - 11/19/09 03:07 PM

I'm going to mount a 6x30 finder on mine. The supplied finder is useless to me.

--------------------
Doug
Truckstop Astronomer


The Universe, the light of God, in all it's majesty

6 achro refractors, 50mm-150mm
1 apo refractor, 90mm
1 SCT, 8 inch
UO Abbe Volcano Tops
Faworski Ortho's
Panoptic 24mm

Carton 100mm f/13 under construction


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starrancher
professor emeritus


Reged: 06/09/09
Posts: 620
Loc: Northern Arizona
Re: Fun with a 50mm refractor. new [Re: Doug76]
      #3457335 - 11/19/09 04:16 PM

The supplied finder has to be stopped down to about 5mm . So I guess you could say it's a 5x5 .

--------------------
LXD75 AR5
LXD75 SN8
Series 4000 Plossls
Misc. other stuff


Fort Rock , Az .


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