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hfjacinto
Almost got me
Reged: 01/12/09
Posts: 2068
Loc: Union,NJ
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Last night I took out my SN6 which is an F5 scope and after my observing session, I decided to look at Orion's belt. Since I have a 36MM Hyperion EP. I put in the focuser and saw one of the best sites ever. I saw all of Orions belt. Not only the belt but M42 and all the star clusters around the area. WOW what a view. This is the maximum FOV that I can see in the F5 and I have to say I was impressed. I recently collimated the scope which really helped with seagulls (but they are there in the last 25% of the FOV) but I was in love. I forgot how beautiful Orion is. Next spring I am going for the Sagittarius cloud.
After Orion I went for the moon and M45, again even though the sky was so BRIGHT that it looked like twilight what a site. The moon surrounded my pinpoints of light.
I am loving wide field viewing. I have 2 questions will a parracorr help with the seagulls and what are your favorite wide field targets?
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C9.25 ASGT 9*50 MM Finder,FT Focuser & 2" Diagonal
Meade LXD 75 6 Inch SNT w 9*50 MM Finder
5,6,9,14.5 MM Zhummel Planetary EPs
13,17,21,24,31,36 MM Baader Hyperion
6.7,8.8 MM Meade UWA & 11 MM Nagler T6
Planetary, OIII and Narrowband Filters
Thousand Oaks Dew Control w Kendrick Heaters
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GlennLeDrew
Pooh-Bah
Reged: 06/18/08
Posts: 1250
Loc: Ottawa, Ontario, Canada
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I doubt the Paracorr will help because it's designed for parabolic mirrors in Newtonians, while your scope is a quite different optical configuration (spherical primary mirror with Schmidt corector plate to correct spherical aberration and to some extent coma).
I'm a wide field junkie myself. I'd have a hard time listing my favorite targets, because there are just so many!
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Home-made 11X50 right angle bino, 8.1 deg. FOV
Modified 26X100 bino, 3.5 deg. FOV
Home-made Mk II RA bino, using interchangeable objectives and eyepieces
My Gallery
Mediocre minds discuss people. Good minds discuss events. Great minds discuss ideas.
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hfjacinto
Almost got me
Reged: 01/12/09
Posts: 2068
Loc: Union,NJ
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Glenn,
Thanks for the Heads up. I called TV and they agreed with you. Oh well.
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C9.25 ASGT 9*50 MM Finder,FT Focuser & 2" Diagonal
Meade LXD 75 6 Inch SNT w 9*50 MM Finder
5,6,9,14.5 MM Zhummel Planetary EPs
13,17,21,24,31,36 MM Baader Hyperion
6.7,8.8 MM Meade UWA & 11 MM Nagler T6
Planetary, OIII and Narrowband Filters
Thousand Oaks Dew Control w Kendrick Heaters
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starrancher
professor emeritus
Reged: 06/09/09
Posts: 574
Loc: Northern Arizona
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Hey Helder , You might check into the Baader MPCC (multi purpose coma corrector) . I have heard that these work good on the Schmidt Newtonians . Check out this link .
http://www.zodiaclight.com/equipment.htm
Scroll down & there is a link on his page for the Baader MPCC . Lots of astrophotos that he has done with the SN8 using the Baader . It is a package of adapter parts to make it a visual unit but is all available for that through Baader .
Dave
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LXD75 AR5
LXD75 SN8
Series 4000 Plossls
Misc. other stuff
Fort Rock , Az .
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Sarkikos
Pooh-Bah
Reged: 12/18/07
Posts: 1036
Loc: Suburban Maryland
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I don't know anything about Paracorrs, but I can give some of my favorite wide field targets:
- Veil Nebula in Cygnus
- North America & Pelican Nebulae in Cygnus
- Kemble's Cascade in Camelopardalis
- Double Cluster in Perseus
- Stock 2 in Cassiopeia
- CoatHanger in Vulpecula
- Scutum Star Cloud, incl. Wild Duck (M11) and nearby dark nebulae
- M11 in Scutum down to M22 & M28
- Butterfly Cluster (M6) & Ptolemy's Cluster (M7) above the tail of Scorpius
Mike
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Celestron 10" f5 Newt on 1stBase (DSO)
Zhumell 8" f6 Newt, Bosma 6" f12 MCT (NSO)
6" f5 Newt, 130ST, 4.5" f4.4 Ball w/GLP, ST80 w/Crayford (RFTs)
C4-R (NSO/DS)
90mm f13 MCT (Luna/DS)
SkyMaster 25x100, 15x70
Zhumell 20x80
Barska XWA 10x50, 8x40
OptiView LPR 10x50
Const View 2.3x40
BV-125C
CG5, 2 drv / CG4, 2 drv, wood legs, ScopeStuff saddle / CG3, 1 drv
SV AZ / 501HDV on Bogen 055XB / P+ on Oberwerk
QuikFinder, Telrad
Orion Dynamo Pro 12, Dew-Not
Have GLP and not afraid to use it!
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Tony Flanders
Post Laureate
Reged: 05/18/06
Posts: 3446
Loc: Cambridge, MA, USA
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Quote:
Last night I took out my SN6 which is an F5 scope and after my observing session, I decided to look at Orion's belt. Since I have a 36MM Hyperion EP. I put in the focuser and saw one of the best sights ever. I saw all of Orions belt. Not only the belt but M42 and all the star clusters around the area. WOW what a view.
How can this be? A 6-inch f/5 has a 750-mm focal length, giving 21X with a 36-mm eyepiece. That works out to a 3.5-degree field of view, which is big enough to fit the Belt nicely, but nowhere near enough to include the entire Belt *and* Sword. That's a job for binoculars, with a 6-degree FOV or wider.
Quote:
What are your favorite wide field targets?
You've already hit the best of the best. Nothing in the sky compares with the Belt and Sword. The Pleiades and Hyades are mighty fine, too, though the Hyades need a 5-degree FOV to fit the whole thing. M44, of course.
Later in the year ... the Coma Star Cluster and Markarian's Chain (under dark skies). The tail of Scorpius. Anywhere in the Milky Way from Sgr to Sct. The list goes on and on ...
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Tony Flanders
First and foremost observing love: naked eye.
Second, binoculars.
Last but not least, telescopes.
And I sometimes dabble with cameras.
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Sarkikos
Pooh-Bah
Reged: 12/18/07
Posts: 1036
Loc: Suburban Maryland
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Six degrees for the Belt and Sword? Five degrees for the Hyades? I've got to try them with my ST80 and an 80 degree 30mm eyepiece. That'll work! 
Mike
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Celestron 10" f5 Newt on 1stBase (DSO)
Zhumell 8" f6 Newt, Bosma 6" f12 MCT (NSO)
6" f5 Newt, 130ST, 4.5" f4.4 Ball w/GLP, ST80 w/Crayford (RFTs)
C4-R (NSO/DS)
90mm f13 MCT (Luna/DS)
SkyMaster 25x100, 15x70
Zhumell 20x80
Barska XWA 10x50, 8x40
OptiView LPR 10x50
Const View 2.3x40
BV-125C
CG5, 2 drv / CG4, 2 drv, wood legs, ScopeStuff saddle / CG3, 1 drv
SV AZ / 501HDV on Bogen 055XB / P+ on Oberwerk
QuikFinder, Telrad
Orion Dynamo Pro 12, Dew-Not
Have GLP and not afraid to use it!
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hfjacinto
Almost got me
Reged: 01/12/09
Posts: 2068
Loc: Union,NJ
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Tony,
I had the belt in full view and then moved the scope to see M42 and I could still see part of the belt. I should have been clear. I moved the scope around to check out everything around the sword. The belt itself was a tight fit in the middle of the EP. I checked out the Hyades and not including Alderaan I could fit almost all of the Hyades. M45 almost fits in the 17MM Hyperion. I was looking for Wider FOV targets. In Spring I am going for Sagittarius (M6, M7 etc).
Mike,
Your list is pretty good, some of those are tough for white skies.
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C9.25 ASGT 9*50 MM Finder,FT Focuser & 2" Diagonal
Meade LXD 75 6 Inch SNT w 9*50 MM Finder
5,6,9,14.5 MM Zhummel Planetary EPs
13,17,21,24,31,36 MM Baader Hyperion
6.7,8.8 MM Meade UWA & 11 MM Nagler T6
Planetary, OIII and Narrowband Filters
Thousand Oaks Dew Control w Kendrick Heaters
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hfjacinto
Almost got me
Reged: 01/12/09
Posts: 2068
Loc: Union,NJ
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Dave,
Thanks the Baader MPCC is 1/2 the price of the parracorr. I am tempted.
--------------------
C9.25 ASGT 9*50 MM Finder,FT Focuser & 2" Diagonal
Meade LXD 75 6 Inch SNT w 9*50 MM Finder
5,6,9,14.5 MM Zhummel Planetary EPs
13,17,21,24,31,36 MM Baader Hyperion
6.7,8.8 MM Meade UWA & 11 MM Nagler T6
Planetary, OIII and Narrowband Filters
Thousand Oaks Dew Control w Kendrick Heaters
|
deSitter
Carpal Tunnel
Reged: 12/09/04
Posts: 2925
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Quote:
Last night I took out my SN6 which is an F5 scope and after my observing session, I decided to look at Orion's belt. Since I have a 36MM Hyperion EP. I put in the focuser and saw one of the best sites ever. I saw all of Orions belt. Not only the belt but M42 and all the star clusters around the area. WOW what a view. This is the maximum FOV that I can see in the F5 and I have to say I was impressed. I recently collimated the scope which really helped with seagulls (but they are there in the last 25% of the FOV) but I was in love. I forgot how beautiful Orion is. Next spring I am going for the Sagittarius cloud.
After Orion I went for the moon and M45, again even though the sky was so BRIGHT that it looked like twilight what a site. The moon surrounded my pinpoints of light.
I am loving wide field viewing. I have 2 questions will a parracorr help with the seagulls and what are your favorite wide field targets?
The Paracorr will correct the coma but only by introducing a more steeply curved focal plane in the SN, so the advantage is lost, because the stars at the edge are just out of focus. However, the eye can compensate to some extent, and that depends on the observer's own copies. Also, out of focus stars look better than flared ones, at least to me.
For really wide field viewing you need a well-corrected f/7 or so ED achromat, like the Meade 152ED or Tak FS152. I know these are expensive scopes but if wide-field viewing is your favorite thing, it's the only way to go. You don't need a more expensive triplet APO for this sort of viewing. You can get quite good views, better than the SN for sheer prettiness of field, with a standard faster achromat, e.g. the 5" f/9.3s and 6" f/8s that are common.
-drl
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RussL
Music Maker
Reged: 03/18/08
Posts: 1925
Loc: Cayce, SC
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When you can't see Sagittarius, Cygnus will do just fine for low-power, wide-field views. Everywhere you go is like one big cluster. Another favorite of mine is the Perseus Association, the area around Mirfak in Perseus. In my 120ST 24x is the cat's pajamas.
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--Dawg, the Russell
"Akita mani yo." Observe everything as you walk. (--Lakota)
Celestron Celestar 8 Standard SCT, f10
Celestron 80mm Wide View ref., f5
Orion 120ST ref., f5
Criterion RV-6 Dynascope, Newt., f8, (c. 1962)
Sears Discoverer 60mm ref., f7, (c. 1973)
Celestron Ultima DX 10x50, 6.5 TFOV
Tasco 7x35 wide
Several mediocre eyepieces
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Hrundi
Pooh-Bah
Reged: 02/06/08
Posts: 1228
Loc: Estonia
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That cluster in perseus is a stunner alright.
The coma berenices star cluster is another.
And the m35-36-37-38 chain is a very nice wide field experience.
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stevecoe
"Astronomical Tourist"
Reged: 04/24/04
Posts: 2628
Loc: Arizona, USA
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Howdy all;
If you will go to the SAC website: www.saguaroastro.org
and find "objects to observe", I made up a listing of wide field objects many years ago. It includes many objects along the Milky Way that are worth a look. At the time I was using a 6" f/6 Newtonian. Now I have a TV 102 refractor. Both provide great views of wide fields. I also dearly love my Leopuld 10X50 binoculars and a lean back chair....heavenly.
Mars is passing the Beehive (M 44 in Cancer), great stuff.
Clear skies to us all;
Steve Coe
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TeleVue 102 refractor on CGEM mount
10 inch f/4.7 Newtonian
Author "Deep Sky Observing" Springer-Verlag
Author "Nebulae and How to Observe Them" Springer
Canon Xt astrocamera with Hutech modification
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Andy Taylor
twistin' by the pool
Reged: 09/24/08
Posts: 431
Loc: t=0 UK
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I built a 100mm F4(!)rich field refractor and WOW...!
Obviously not good on the bright stuff - but for lurking around the milky way etc it's amazing...
I can perfectly frame the double cluster in my 15mm TV Plossl and it's really really bright.
My advice is just watch your exit pupil size...
My 28mm RKE is stunning but the 7mm exit pupil means I'm wasting photons...
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Equipment list of shame:
A strange heap of assorted junk that when thrown together and dragged out into the dark shows me the wonders of the universe...
And then dews up...
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stevecoe
"Astronomical Tourist"
Reged: 04/24/04
Posts: 2628
Loc: Arizona, USA
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Andy, et al;
That is the reason that I really like the TV 102 ( 4" f/8)as an RFT refractor. I can put in the 27mm Panoptic and still have an exit pupil that my eyes can deal with. Also, the background is nice and dark with sharp star images.
Clear skies to us all;
Steve Coe
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TeleVue 102 refractor on CGEM mount
10 inch f/4.7 Newtonian
Author "Deep Sky Observing" Springer-Verlag
Author "Nebulae and How to Observe Them" Springer
Canon Xt astrocamera with Hutech modification
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Andy Taylor
twistin' by the pool
Reged: 09/24/08
Posts: 431
Loc: t=0 UK
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Quote:
Andy, et al;
That is the reason that I really like the TV 102 ( 4" f/8)as an RFT refractor. I can put in the 27mm Panoptic and still have an exit pupil that my eyes can deal with. Also, the background is nice and dark with sharp star images.
Clear skies to us all;
Steve Coe
My 100mm F4 is sharp too...
At less then $100 inc 15mm TV eyepiece it is serious bang per buck...
Plus the satisfaction that I conceived and built it myself...
Priceless...
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Equipment list of shame:
A strange heap of assorted junk that when thrown together and dragged out into the dark shows me the wonders of the universe...
And then dews up...
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stevecoe
"Astronomical Tourist"
Reged: 04/24/04
Posts: 2628
Loc: Arizona, USA
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As long as you are enjoying yourself, that is all that matters.
Havin' fun;
Steve Coe
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TeleVue 102 refractor on CGEM mount
10 inch f/4.7 Newtonian
Author "Deep Sky Observing" Springer-Verlag
Author "Nebulae and How to Observe Them" Springer
Canon Xt astrocamera with Hutech modification
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RussL
Music Maker
Reged: 03/18/08
Posts: 1925
Loc: Cayce, SC
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It's the very reason I have two short, achromatic refractors. The 120ST is stunning on richfield stuff. Like the whole sword of Orion at 24x. 
--------------------
--Dawg, the Russell
"Akita mani yo." Observe everything as you walk. (--Lakota)
Celestron Celestar 8 Standard SCT, f10
Celestron 80mm Wide View ref., f5
Orion 120ST ref., f5
Criterion RV-6 Dynascope, Newt., f8, (c. 1962)
Sears Discoverer 60mm ref., f7, (c. 1973)
Celestron Ultima DX 10x50, 6.5 TFOV
Tasco 7x35 wide
Several mediocre eyepieces
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Andy Taylor
twistin' by the pool
Reged: 09/24/08
Posts: 431
Loc: t=0 UK
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The Meade 24.5mm SWA would seem to be a good match for my scope giving an exit pupil of just a tad over 6mm and a wider FOV - anyone here using this eyepiece?
There is one on UK eBay at the moment and I'm tempted...
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--------------------------------------------------
Equipment list of shame:
A strange heap of assorted junk that when thrown together and dragged out into the dark shows me the wonders of the universe...
And then dews up...
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RussL
Music Maker
Reged: 03/18/08
Posts: 1925
Loc: Cayce, SC
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Andy, depending on your eyesight, a 6mm exit pupil is kinda big. The background sky will be very bright and thus contrast will be low. Field of view will be great, though. I have a 40mm Plossl that I sometimes use just to see a bigger field of view, but I don't see much detail or dim objects with it. An aperture mask helps, but can also make some things disappear. On average, for most folks beyond their twenties a 5mm exit pupil is deemed to be about the max.
--------------------
--Dawg, the Russell
"Akita mani yo." Observe everything as you walk. (--Lakota)
Celestron Celestar 8 Standard SCT, f10
Celestron 80mm Wide View ref., f5
Orion 120ST ref., f5
Criterion RV-6 Dynascope, Newt., f8, (c. 1962)
Sears Discoverer 60mm ref., f7, (c. 1973)
Celestron Ultima DX 10x50, 6.5 TFOV
Tasco 7x35 wide
Several mediocre eyepieces
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