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$50 for 4.5 Newtonian?
Neighbour needed $50, so he drops off his 4.5" (114mm)
reflector, Al alti-azimuth tripod (yes that sux) , 2 eyepieces, 24 & 9 mm, in good shape. Tonight wife & I tested on Moon & Jupiter, it's good quality, (apart from summer scintillation), is $50 a fair price if I keep the scope? Thanks Ken |
#2
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$50 for 4.5 Newtonian?
On Sep 3, 1:45 am, "Ken S. Tucker" wrote:
Neighbour needed $50, so he drops off his 4.5" (114mm) reflector, Al alti-azimuth tripod (yes that sux) , 2 eyepieces, 24 & 9 mm, in good shape. Tonight wife & I tested on Moon & Jupiter, it's good quality, (apart from summer scintillation), is $50 a fair price if I keep the scope? $50 sounds fair enough, certainly a good view of lunar features is worth that. There isn't anything wrong with an alt-azimuth mount if it's a Dobsonian design. :-) What diameter are the focuser and eyepieces, 1.25-inch or 0.965- inch ? |
#3
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$50 for 4.5 Newtonian?
wrote: On Sep 3, 1:45 am, "Ken S. Tucker" wrote: Neighbour needed $50, so he drops off his 4.5" (114mm) reflector, Al alti-azimuth tripod (yes that sux) , 2 eyepieces, 26 & 9 mm, in good shape. Tonight wife & I tested on Moon & Jupiter, it's good quality, (apart from summer scintillation), is $50 a fair price if I keep the scope? $50 sounds fair enough, certainly a good view of lunar features is worth that. I compared the 4.5" (900mm Orbitor 6500) with a 60mm refractor, and noted a resolution improvement on Jupiters moons. Three were very close but resolveable (I think), same with the lunar views. There isn't anything wrong with an alt-azimuth mount if it's a Dobsonian design. :-) Well ok. We're looking into building a new mounting. What diameter are the focuser and eyepieces, 1.25-inch or 0.965- inch ? 1.25 inch, Meade Series 4000 DS Super Plossl 26 mm, " " 9.7 mm. Both worked well. Ken |
#4
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$50 for 4.5 Newtonian?
It's a no brainer in your case, why do you even ask? It would be a great
starter scope for kids or anyone that knows little or nothing about astronomy. "Ken S. Tucker" wrote in message ... wrote: On Sep 3, 1:45 am, "Ken S. Tucker" wrote: Neighbour needed $50, so he drops off his 4.5" (114mm) reflector, Al alti-azimuth tripod (yes that sux) , 2 eyepieces, 26 & 9 mm, in good shape. Tonight wife & I tested on Moon & Jupiter, it's good quality, (apart from summer scintillation), is $50 a fair price if I keep the scope? $50 sounds fair enough, certainly a good view of lunar features is worth that. I compared the 4.5" (900mm Orbitor 6500) with a 60mm refractor, and noted a resolution improvement on Jupiters moons. Three were very close but resolveable (I think), same with the lunar views. There isn't anything wrong with an alt-azimuth mount if it's a Dobsonian design. :-) Well ok. We're looking into building a new mounting. What diameter are the focuser and eyepieces, 1.25-inch or 0.965- inch ? 1.25 inch, Meade Series 4000 DS Super Plossl 26 mm, " " 9.7 mm. Both worked well. Ken |
#5
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$50 for 4.5 Newtonian?
On Wed, 2 Sep 2009 22:45:48 -0700 (PDT), Ken S. Tucker wrote:
Neighbour needed $50, so he drops off his 4.5" (114mm) reflector, Al alti-azimuth tripod (yes that sux) , 2 eyepieces, 24 & 9 mm, in good shape. Tonight wife & I tested on Moon & Jupiter, it's good quality, (apart from summer scintillation), is $50 a fair price if I keep the scope? Thanks Ken Sounds to me like a wonderful acquisition. I own a 4.5 inch scope as you describe and enjoy its portability. And I would say this, the mount you have is just fine. Mine has an equitorial mount which is never utilized for its features. Additionally, the two eyepieces you have mentioned are just right. The 24mm gives you a fine and fairly large field of view while the 9mm is just about as far as you want to push the power of the scope. On both my 12.5 inch dobsonian and my 4.5 inch newtonian, the 9mm EP gets by far the most use of the many eyepieces in my arsenal. P.S. Your scope and dark, clear skies will provide some fine views of many, many deep sky objects. -- Martin R. Howell The Astro Post www.theastropost.com/smf It's ALL there! |
#6
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$50 for 4.5 Newtonian?
I rest my case.
"Martin R. Howell" wrote in message news On Wed, 2 Sep 2009 22:45:48 -0700 (PDT), Ken S. Tucker wrote: Neighbour needed $50, so he drops off his 4.5" (114mm) reflector, Al alti-azimuth tripod (yes that sux) , 2 eyepieces, 24 & 9 mm, in good shape. Tonight wife & I tested on Moon & Jupiter, it's good quality, (apart from summer scintillation), is $50 a fair price if I keep the scope? Thanks Ken Sounds to me like a wonderful acquisition. I own a 4.5 inch scope as you describe and enjoy its portability. And I would say this, the mount you have is just fine. Mine has an equitorial mount which is never utilized for its features. Additionally, the two eyepieces you have mentioned are just right. The 24mm gives you a fine and fairly large field of view while the 9mm is just about as far as you want to push the power of the scope. On both my 12.5 inch dobsonian and my 4.5 inch newtonian, the 9mm EP gets by far the most use of the many eyepieces in my arsenal. P.S. Your scope and dark, clear skies will provide some fine views of many, many deep sky objects. -- Martin R. Howell The Astro Post www.theastropost.com/smf It's ALL there! |
#7
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$50 for 4.5 Newtonian?
Thanks guys.
Martin you sound quite experienced. Martin R. Howell wrote: On Wed, 2 Sep 2009 22:45:48 -0700 (PDT), Ken S. Tucker wrote: Neighbour needed $50, so he drops off his 4.5" (114mm) reflector, Al alti-azimuth tripod (yes that sux) , 2 eyepieces, 24 & 9 mm, in good shape. Tonight wife & I tested on Moon & Jupiter, it's good quality, (apart from summer scintillation), is $50 a fair price if I keep the scope? Thanks Ken Sounds to me like a wonderful acquisition. I own a 4.5 inch scope as you describe and enjoy its portability. And I would say this, the mount you have is just fine. Mine has an equitorial mount which is never utilized for its features. Are you implying an alti-azimuth mount is pretty much as good as an equatorial mount? ((I'm considering building a new mount for a 60mm, but find an equatorial is more difficult)). Additionally, the two eyepieces you have mentioned are just right. The 24mm gives you a fine and fairly large field of view while the 9mm is just about as far as you want to push the power of the scope. On both my 12.5 inch dobsonian and my 4.5 inch newtonian, the 9mm EP gets by far the most use of the many eyepieces in my arsenal. I turned the 4.5" with 24mm and view field was about 1/2 to 2/3 of Pleides sp, nice stuff. P.S. Your scope and dark, clear skies will provide some fine views of many, many deep sky objects. Martin R. Howell Regards Ken |
#8
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$50 for 4.5 Newtonian?
On Fri, 4 Sep 2009 06:49:24 -0700 (PDT), Ken S. Tucker wrote:
Thanks guys. Martin you sound quite experienced. Martin R. Howell wrote: On Wed, 2 Sep 2009 22:45:48 -0700 (PDT), Ken S. Tucker wrote: Neighbour needed $50, so he drops off his 4.5" (114mm) reflector, Al alti-azimuth tripod (yes that sux) , 2 eyepieces, 24 & 9 mm, in good shape. Tonight wife & I tested on Moon & Jupiter, it's good quality, (apart from summer scintillation), is $50 a fair price if I keep the scope? Thanks Ken Sounds to me like a wonderful acquisition. I own a 4.5 inch scope as you describe and enjoy its portability. And I would say this, the mount you have is just fine. Mine has an equitorial mount which is never utilized for its features. Are you implying an alti-azimuth mount is pretty much as good as an equatorial mount? ((I'm considering building a new mount for a 60mm, but find an equatorial is more difficult)). Nah, not at all. I am just a right tool for the right job kinda fellow and for me, my little 4.5 inch scope is a grab and go type of thing. . .which equals put the scope outside and look at obvious stuff and then star hop if necessary to fainter objects. And, since I am used to the manual tracking of my dobsonian, this technique works as well with the mount on the 4.5 inch. I have had two 8 inch newts mounted on equatorials but found the mount to be more troublesome and "work" than they were worth. Regards, Martin |
#9
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$50 for 4.5 Newtonian?
Martin R. Howell wrote: On Fri, 4 Sep 2009 06:49:24 -0700 (PDT), Ken S. Tucker wrote: Thanks guys. Martin you sound quite experienced. Martin R. Howell wrote: On Wed, 2 Sep 2009 22:45:48 -0700 (PDT), Ken S. Tucker wrote: Neighbour needed $50, so he drops off his 4.5" (114mm) reflector, Al alti-azimuth tripod (yes that sux) , 2 eyepieces, 24 & 9 mm, in good shape. Tonight wife & I tested on Moon & Jupiter, it's good quality, (apart from summer scintillation), is $50 a fair price if I keep the scope? Thanks Ken Sounds to me like a wonderful acquisition. I own a 4.5 inch scope as you describe and enjoy its portability. And I would say this, the mount you have is just fine. Mine has an equitorial mount which is never utilized for its features. Are you implying an alti-azimuth mount is pretty much as good as an equatorial mount? ((I'm considering building a new mount for a 60mm, but find an equatorial is more difficult)). Nah, not at all. I am just a right tool for the right job kinda fellow and for me, my little 4.5 inch scope is a grab and go type of thing. . .which equals put the scope outside and look at obvious stuff and then star hop if necessary to fainter objects. And, since I am used to the manual tracking of my dobsonian, this technique works as well with the mount on the 4.5 inch. I have had two 8 inch newts mounted on equatorials but found the mount to be more troublesome and "work" than they were worth. Yeah, reviewing our observing, about 80% is rich-field, 20% high power (~100x or more) if atmosphere and target warrant the effort. I usually leave the 60mm set-up outside, so I'll put it on a pedestal, (Alti-azimuth), and concentrate on vibration damping. Regards Ken |
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