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Re: A Little Wonder

PostPosted: Tue Jun 09, 2015 7:24 am
by Nightspore
patthehorse wrote:Orange is a good one for daytime viewing, dampens the bright sky. GL


You were right about the orange filter. :thumbsup:

I viewed the Mare Imbrium region of the Moon between 05:00 and 06:00 with both the Celestron Orange No.21 and Deep Yellow No.12 filters. The orange revealed more detail and was overall better in those light conditions. I chose the Sea of Rains as it was close to the shadow part of the Moon (it reaches Last Quarter at 16:42 BST today) so quite prominently visible. Craters, like Autolycus, Archimedes and Timocharis, were easily visible. I used my Mak with a combination of eyepieces and a Barlow to give me 87x, 102x and 173x magnifications. I also compared it to an unfiltered 15mm EP.

It looked a bit like this:

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Virtual Moon Atlas, colour by PhotoFiltre 7

For some reason I keep thinking I want to eat a Terry's Chocolate Orange now! :lol:

Re: A Little Wonder

PostPosted: Thu Jun 11, 2015 2:54 am
by Nightspore
My Celestron 10mm Luminos EP was delivered Monday. I couldn’t quite decide between that and a Baader Hyperion 13mm. I’ll have to read up a tad more on the Hyperion though before I part with any spondoolies. Anyway, I hadn’t really got a decent 10mm EP and anything with a focal length of less than about 13mm seems to have a tiny FOV. I just couldn’t resist buying the Celestron and trying it. It doesn’t have a carrying pouch included but has soft rubber dust caps and a cleaning cloth. I wasn’t prepared for the size though, it’s like a hand grenade and weighs in at 12 ounces! I mean, there’s only 16 ounces to a pound, right?

I had visions of it wrenching the star diagonal out of the Mak or something. So I tested it in daylight with a 45 degree Amici prism diagonal (also Celestron). It seemed safe enough but I could feel the weight of it as I manipulated the small Maksutov. It seemed fine though. I was impressed with the field of view and overall clarity. I just had to test it on something astronomical, momentarily toying with the idea of a twilight Jupiter and Venus again, but clouds soon put a stop to that.

So I waited for Saturn the ‘little wonder’ to rise in the south-east. Eventually it was high enough for me to test this shiny silver Mills Bomb of an EP also giving me a respectable magnification of 130x with the Mak. The conditions were not brilliant and a faint haze was prevalent but it was a relatively fine view of the ‘little wonder’. It was quite something to watch it leisurely move through the large FOV at a decent magnification (I’m gonna have to fix that clock-drive). I could even sweep some star fields a bit. I tentatively tried it with a 2x Barlow (Celestron Omni) just to see how the hand grenade would be. It was fine -‘the bomb’ - in fact lol. Although 260x is pushing it a bit on a 102mm Maksutov. Celestron claim that their four inch Maksutov-Cassegrain telescopes have a highest useful magnification of 241x. So with the good quality optics of the Luminos Mills Bomb I reckon I can just about get away with 260x!

I’m impressed anyway and can’t wait to test it on the Moon (not actually standing on the lunar surface of course ;) ). :thumbsup:

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Geek-speak blurb from the Celestron page:

Focal Length 10 mm (0.39 in)
Apparent Field of View 82 °
Eye Relief (mm) 12 mm (0.47 in)
Optical Coatings Fully Multi Coated
Number of Lens Elements 7
Barrel Size (in) 1.25 in (32 mm)
Field Stop Diameter 17 mm (0.67 in)
Parfocal Eyepieces Yes
Weight 12 oz/340.3 g

Re: A Little Wonder

PostPosted: Sat Jun 13, 2015 6:03 am
by patthehorse
Nice 1, enjoy the new super de-lux views from the Hand grenade. :thumbsup:

Re: A Little Wonder

PostPosted: Sat Jun 13, 2015 1:25 pm
by Nightspore
Thanks, but the wet weather has pulled the pin on that one I'm afraid. :rage:

Where's this rumoured heat wave?

There is a RA conjunction of the Moon and Saturn on the 29th June (02:03:23). Maybe the rain will have stopped by then and I can get a decent butcher's hook?

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Planetarium AndScaloid

I could see Vega a few nights back. I really want to see M 57 (it’s on my bucket list lol) and I’m pretty confident I can locate it if I can get a clear view of Sheliak and Sulafat as markers.

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Celestron SkyPortal

Unfortunately a faint cloud haze has been present every time I’ve looked, or I need glasses or something. I’m interested to know what it looks like at 130x magnification.

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Celestron SkyPortal

I have a Celestron 32mm Plossl, which seemed huge until I acquired the hand grenade, which is great for sweeping star fields. The ‘Double Double’ binary is in Lyrae as well (another bucket list object). I did see the M4 Globular Cluster near Antares a couple of weeks ago, I think I could see NGC 6164 as well, unless I imagined it. I’m not imagining this rain though!

Re: A Little Wonder

PostPosted: Sun Jun 21, 2015 10:39 pm
by patthehorse
Get as much Mag as possible on the ring once centered. It's a stunning object through the scope at the SDSO. 24" I think, Galileo can correct me there. Get a barlow and the hand grenade on it. :thumbsup: Alberio is a lovely double and in a good position when the clouds allow. You can see the two different coloured stars in your eyepiece. One of the 1st things I visualised. It's just over halfway down the summer triangle towards Altair.
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Re: A Little Wonder

PostPosted: Mon Jun 22, 2015 12:10 am
by Nightspore
OK, thanks. I will definitely try and see it with the Newtonian; and with the hand grenade and a TeleVue 3x Barlow I should get a decent 270x magnification. :hypnotized:

And thanks for the info on Albireo (your image is superb), I will try for that too when we get a decent break in the weather. It looks pretty easy to find, even with my Mak.

Beta 2 Cygni as seen from Albireo (Celestia).
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Re: A Little Wonder

PostPosted: Mon Jun 22, 2015 1:53 am
by patthehorse
Found this on youface tubebook thingy it includes daytime planets worth a watch. They do their stuff every Satuday night.
https://www.youtube.com/watch?v=RFQARE-C_P8

Re: A Little Wonder

PostPosted: Mon Jun 22, 2015 11:06 am
by Nightspore
Yeah TubeFace thingy is a mine of information. That video's pretty cool, I may just download it to show me what to aspire to lol! I'm guessing, as it's upside down, it was taken with a pretty big Newtonian.

Or perhaps taken from the vicinity of Amalthea. :lol:
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On Saturday at about 10 pm I got a naked eye view of a crescent Moon, Jupiter and Venus just hanging beautifully in a crystal clear sky ... for about 10 mins before it was all gone. I thought, I know, on Sunday if it looks good I'll set up a good hour before and be ready, even if it's only a short viewing time. But the weather had other ideas. I was so disappointed I had to order another TeleVue EP just to cheer myself up ... sod the expense lol!

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Maybe next time ... ;)

Re: A Little Wonder

PostPosted: Tue Jun 23, 2015 7:03 pm
by Nightspore
The geocentric conjunction between Venus and Jupiter in right ascension on July 1st (03:38:04 BST local time) should be good. If the weather holds out! :praying:

As seen from Jupiter 22:36 GMT
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At 03:38 BST
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From Planet Earth at 22:37 BST.
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