Return to the Cloudy Nights Telescope Reviews home page


Observing >> Solar System Observing

Pages: 1 | 2 | 3 | 4 | (show all)
dscarpa
Post Laureate
*****

Reged: 03/15/08

Loc: San Diego Ca.
Re: Hexagon, possible? new [Re: TG]
      #5931595 - 06/20/13 04:16 PM

I had very good seeing here last night and used the C9.25 with a 9mm Astro Hutech ortho for 300X and a 7XW for 370X. The hexagon as was the case with my mak was easy and looked a lot like your excellent drawing but the big cat was pulling in a quite a bit of fine belt detail of various colors. The rings and moons were quite the sight as well. David

Edited by dscarpa (06/20/13 04:18 PM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
t.r.
Post Laureate
*****

Reged: 02/14/08

Loc: Upstate NY
Re: Hexagon, possible? new [Re: dscarpa]
      #5932751 - 06/21/13 10:26 AM

I'll try tonight with my C11XLT.

Post Extras: Print Post   Remind Me!   Notify Moderator  
dscarpa
Post Laureate
*****

Reged: 03/15/08

Loc: San Diego Ca.
Re: Hexagon, possible? new [Re: TG]
      #5932776 - 06/21/13 10:44 AM

I'll give my WO ZS-110 a shot at it, was observing with it last week with not quite as good conditions and didn't see it. Then again on a night with the same seeing the mak didn't show it either. Had the C9.25 on it last night with only the 7 XW, love seeing Saturn like that! David

Post Extras: Print Post   Remind Me!   Notify Moderator  
Achernar
Postmaster
*****

Reged: 02/25/06

Loc: Mobile, Alabama, USA
Re: Hexagon, possible? new [Re: TG]
      #5933906 - 06/21/13 11:18 PM

I have seen it as a much darker area right at the pole, but the hexagon shape wasn't visible through the 10 and 15-inch Dobs I use. The seeing is often good during the warmer months, but not good enough at 400X and above for me to see the hexagon shape of this feature, if that is even possible from Earth with a 15-inch Dob. I have noticed white patches near the pole that seem to be clouds quite near it, as well as the remanants of that storm that occurred in 2010. As for the color of the polar region, it looks to me like a blend of olive drab and brown though my larger telescopes at 300 to 425X.

Taras


Post Extras: Print Post   Remind Me!   Notify Moderator  
dscarpa
Post Laureate
*****

Reged: 03/15/08

Loc: San Diego Ca.
Re: Hexagon, possible? new [Re: TG]
      #5934426 - 06/22/13 11:26 AM

The ZS-110 showed it! It didn't stand out as much as it did when using the cats but it definitely was there at the higher powers. I was using my 5X Powermate with a 16 WO UWAN at 240X-270X and 13 Ethos for 300X. Conditions were once again very good. David

Post Extras: Print Post   Remind Me!   Notify Moderator  
azure1961p
Postmaster
*****

Reged: 01/17/09

Loc: USA
Re: Hexagon, possible? new [Re: dscarpa]
      #5935123 - 06/22/13 06:29 PM

So it wasn't a smooth polar ellipse but an faceted hexagon?

Pete


Post Extras: Print Post   Remind Me!   Notify Moderator  
E_Look
Post Laureate


Reged: 03/06/08

Loc: near New York
Re: Hexagon, possible? new [Re: azure1961p]
      #5935209 - 06/22/13 07:32 PM

I wonder what combination of forces could cause that effect!

Post Extras: Print Post   Remind Me!   Notify Moderator  
contedracula
super member


Reged: 10/11/11

Loc: Queens, NYC and Sarasota FL
Re: Hexagon, possible? new [Re: E_Look]
      #5936348 - 06/23/13 12:56 PM

I've used at same time three telescope in the last 2 weeks, 14" SC, 10" MakNewton and 180mm Refractor.
Seeing II Antoniadi Mark V and a lot of eyepieces but impossible to resolve the Hexagon shape, only as polar circle.

Cheers
Gianluca


Post Extras: Print Post   Remind Me!   Notify Moderator  
azure1961p
Postmaster
*****

Reged: 01/17/09

Loc: USA
Re: Hexagon, possible? new [Re: contedracula]
      #5936709 - 06/23/13 04:35 PM

It IS quite the testament to modern imaging these days. I think even an 8" aperture can resolve the hex but based on my experience is slippy seeing anyway and everyone else's experiences it would seem to be seriously difficult for any scope.

Pete


Post Extras: Print Post   Remind Me!   Notify Moderator  
leviathan
sage


Reged: 11/29/11

Loc: Azerbaijan
Re: Hexagon, possible? new [Re: azure1961p]
      #5937382 - 06/24/13 01:20 AM

So what is the theoretically minimum aperture we need to resolve shape of Hexagon visually ? David Knisely's answer will be interesting.

Post Extras: Print Post   Remind Me!   Notify Moderator  
contedracula
super member


Reged: 10/11/11

Loc: Queens, NYC and Sarasota FL
Re: Hexagon, possible? new [Re: leviathan]
      #5937763 - 06/24/13 10:44 AM

I believe the really problem not is the only resolution but expecially the contrast.
Through my C14HD I resolve the polar zone but NOT like AP180EDT or MN106 in these last two telescopes I see very well the edge of polar Storm but never in this season the shape of the sides as hexagon.

Thanks
Gianluca


Post Extras: Print Post   Remind Me!   Notify Moderator  
leviathan
sage


Reged: 11/29/11

Loc: Azerbaijan
Re: Hexagon, possible? new [Re: contedracula]
      #5937880 - 06/24/13 11:54 AM

The reason I'm asking because I saw it only once in 600mm telescope, and David Gray was reporting about shape of it using 400mm. Seems that something like 400mm+ is needed together with good to excellent seeing to be able to resolve it.

Post Extras: Print Post   Remind Me!   Notify Moderator  
contedracula
super member


Reged: 10/11/11

Loc: Queens, NYC and Sarasota FL
Re: Hexagon, possible? new [Re: leviathan]
      #5937983 - 06/24/13 12:55 PM

All of us have a conscience very influenceable and especially when we look an object previously seen easily become fool by the imagination ...

I'm not referring to your specific example, but I've read in many forums a lot of "fantasy objects" observed through the Dobson 600mm

My opinion, the BIG Dobson is the BEST PERFORMER for deep sky but for Hi Res Planetary it's really a problem to do long night of observation with hi magnification at 10 feet by the ground and manual tracking

Cheers
Gianluca


Post Extras: Print Post   Remind Me!   Notify Moderator  
leviathan
sage


Reged: 11/29/11

Loc: Azerbaijan
Re: Hexagon, possible? new [Re: contedracula]
      #5938058 - 06/24/13 01:46 PM

Gianluca, telescope I've used was not a deepsky Dobsonian, but observatory Zeiss-600 Cassegrain 100 feet above the ground under dome. And it was not the first time that I've looked through it.

Post Extras: Print Post   Remind Me!   Notify Moderator  
contedracula
super member


Reged: 10/11/11

Loc: Queens, NYC and Sarasota FL
Re: Hexagon, possible? new [Re: leviathan]
      #5938092 - 06/24/13 02:06 PM

For this reason, I repeat, my last message was not referring about your example, to have those diameters for us, amateur astronomer, is possible only with dobson.

Thanks
Gianluca


Post Extras: Print Post   Remind Me!   Notify Moderator  
azure1961p
Postmaster
*****

Reged: 01/17/09

Loc: USA
Re: Hexagon, possible? new [Re: contedracula]
      #5938848 - 06/24/13 10:41 PM

Well yeah but -

A "deepsky Newtonian" of immense size in dob form can be beyond any resolution you'll ever get out of a Mak newt or apo or C14. There is the problem of matching the sky conditions to the mirrors potential resolution envelope but the notion that because its a dob for example instead of a cassegrain or some such holds no water. Well maybe a drop. Standing on a ladder hand guiding a dob is just not that bad!!!!

Pete
-no I don't own a huge dob but I ve seen what they can do.

Edited by azure1961p (06/24/13 10:43 PM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
mikey cee
Postmaster
*****

Reged: 01/18/07

Loc: bellevue ne.
Re: Hexagon, possible? new [Re: azure1961p]
      #5938990 - 06/25/13 12:19 AM

Boy if I lived near the 30th parallel I could see all kinds of stuff...without qustion!! Mike

Post Extras: Print Post   Remind Me!   Notify Moderator  
contedracula
super member


Reged: 10/11/11

Loc: Queens, NYC and Sarasota FL
Re: Hexagon, possible? new [Re: mikey cee]
      #5939243 - 06/25/13 07:42 AM

If I buy a Ferrari or a Lamborghini I cannot expect to heat the tires on 5th av. because the road is not adequate.

If I have a Dobson that gives me a lot of resolution but the seeing will allow it once per year is better to prefer a Telescope that makes a strong contrast almost every nights because the human eye needs LIVE CONTRAST, we don't have Photoshop during observation, a large obstruction waste too much contrast.

Today the market offers more items for astrophotography better than to observers, this has allowed to sell more economic and portable instruments forgetting there are telescopes created for a specific amateur activity.

Kindly regards
Gianluca


Post Extras: Print Post   Remind Me!   Notify Moderator  
Achernar
Postmaster
*****

Reged: 02/25/06

Loc: Mobile, Alabama, USA
Re: Hexagon, possible? new [Re: mikey cee]
      #5939292 - 06/25/13 08:27 AM

Indeed, I routinely look at Omega Centauri from a site near Mobile Alabama. Most of the sky is accessible from the 30th parallel in either hemisphere. That would be where I would want to put a major observatory, or as close to it as possible.

Taras


Post Extras: Print Post   Remind Me!   Notify Moderator  
leviathan
sage


Reged: 11/29/11

Loc: Azerbaijan
Re: Hexagon, possible? new [Re: contedracula]
      #5939619 - 06/25/13 12:05 PM

Quote:

If I have a Dobson that gives me a lot of resolution but the seeing will allow it once per year is better to prefer a Telescope that makes a strong contrast almost every nights because the human eye needs LIVE CONTRAST, we don't have Photoshop during observation, a large obstruction waste too much contrast.



You can make aperture mask or use lower magnifications on those nights. Anyway smaller aperture will not show planet better and brighter that bigger one.


Post Extras: Print Post   Remind Me!   Notify Moderator  
Pages: 1 | 2 | 3 | 4 | (show all)


Extra information
2 registered and 11 anonymous users are browsing this forum.

Moderator:  Rich (RLTYS), star drop, dr.who 

Print Thread

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled


Thread views: 4353

Jump to

CN Forums Home




Cloudy Nights Sponsor: Astronomics