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Messages - ovhercayvic

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aeajr, looking at the distances you have to drive for getting even a little darker skies is astounding. I'm sitting in a bright red zone, third most LP. Think it's good to at some occasions go as dark as possible, and then somewhere middle way, just for getting the range. Dark green is in my reach, but the main reason I went there, with a 70 minutes drive, was to see the Milky Way. Wouldn't feel comfortable going there when the snow falls, slippery roads, out in sub zero, don't even know where the nearest inhabited house is. The border of dark brown/yellow is still 45 minutes away, may not in the long run be prepared to go there often for my one hour sessions.

Observing frequently I think is key. You should be able to look out the window, finding the clouds aren't filling the entire sky, and go out. Look at the constellations changing. The moon. How about solar observing, tried it? Just look at the multitude of stars you can see with your telescope or binoculars, let's take the Cygnus area. Each of those are worlds. I think this is about setting one's mind more than anything else,

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Mike- Good advice, I will def. give that a try.

Raymond - I agree. I have watched videos where the hogging and shaping was done with a 4"can with dental stone (cat food can), This made sense to me.....glad to hear someone else has experienced success with the method.

3
Am I the only one having a surreal vision of a group of windmills that do nothing but power their own 24/7 spotlight level illumination? Sounds about right... but think how good it is for the environment! Argh!

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ATM, Optics and DIY Forum / Re: Tube End Covers for Hasting Tube?
« on: February 03, 2018, 11:54:48 AM »
Chuck, I did not realize they made a catalyzed hammertone paint. Any recollection of what brand? Finish looks great.

5
General Astronomy & Observing / Re: Next maximum for Mira in Dec '17
« on: February 02, 2018, 10:10:10 PM »
Quote
now at mag ~4, an easy spot in 7 x 50s this evening

Yes - looked similar to or slightly brighter than Delta Cet tonight, and I could just see it with the naked eye for the first time.

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Mounts Questions & Expirience / Re: The new Sky-Watcher AZ EQ5 mount debut
« on: February 02, 2018, 10:09:00 PM »
Do I have the understanding of the SNAP ports correctly?

Number of exposures/exposure time/delay will be setup through the synscan controller? So it's essentially has a built in intervalometer to control two cameras?

Is this the necessary cable for Nikon? example:http://www.ebay.com/...2-/171105712807

This will only be useful if you are not using any sort of camera control like BYEOS or BYNikon?

7
Beginners Forum / Re: Telescope & binoculars for a newbie :)
« on: February 02, 2018, 07:33:05 PM »
Hello!

@aeajr & tony_spina: I hadn´t read about the Legacy being waterproof/fogprooftill I read your post Tony but ordered them yesterday after that  , including the tripod mount, "Turn left at Orion" and "The Backyard Astronomers Guide". This weekend I´m going camping so I´ll start learning the night sky and enjoying the binoculars. Thanks a lot to both for your advice and recommendations!

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rseven: Thanks for your point of view! I don´t plan on spending a lot of time just with binoculars, I´d like to know the location of the planets and a few galaxies, nebulaes and star clusters. There´s obviously way to much to see and learn, and also I´d like to get the telescope before it´s too cold to be a long time outdoors jaja. I think that as I use the telescope I can explore and learn about the stuff I find (I´ll keep a log to write about what I find and try to draw sketches), so I can also learn a lot with it.

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Thanks and I´ll post when I get the binoculars and astronomy books !!

Juan

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Beginners Forum / Re: Need a table for my StarBlast
« on: February 02, 2018, 06:24:19 PM »
Quote
I used a cheap bar stool from wally world,($12 Canadian) made out of solid wood all you need is a screwdriver, drilled a hole in the middle for the ground board bolt to sit in plus a set of cork sticky pads, the feet of the Starblast hung over the edge for security, the Starblast has gone but the stool still does service with my 130 Heritage collapsable dob, TD.

Do you have a link for this stool? I have looked and have not found it.

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Beginners Forum / Re: Finally purchasing! 12 inch Skywatcher
« on: January 31, 2018, 12:56:37 PM »
Quote
It seems the gods are against me. Amazon messaged me and I was thrilled to see my scope will be delayed a day, only to allow the moon to be ever so bright from my location.
Hopefully this isnt a bad omen.
Some of you mentioned of things I should purchase ASAP.
So far I have:
Messier planisphere
Pocket Sky Atlas
Decent red light
Celestron Skymaster 15x70s (not sure what model, not the cheapest though).
I have had the binos for years, but have been observing every chance I can for roughly the last half year.
I have had my Pocket Sky Atlas(large version) and Messier planisphere for about 2 months.
After looking through a cheap 70mm celestron refractor, with such a small FOV, I think I understand how benefical the binoculars can be.

Next things I plan on purchasing soon.
Light Shroud
Telrad
Ultra high contrast filter
and then begin eyepiece purchasing.

Thanks for all your help, and congrats to me. Very excited.

Not a problem, this will be first light and you'll have Jupiter and Saturn to look at as well as some DSO's that will be visible despite the bright moon and light pollution.

Taras

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Reflectors Telescopes Forum / Re: Lightbridge Collimation help needed!
« on: January 31, 2018, 10:09:29 AM »
Do you mean the user mounted the secondary mirror upside down (front surface rotated 180-degrees)?

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Eyepieces Questions & Recommendations / Re: Short FL eyepieces - advice
« on: January 31, 2018, 05:38:52 AM »
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Friend of mine's got his SW 102 refractor on an M2 - very nice and steady. He has the post/extender between the mount & tripod. I didn't really expect it to be as solid as it is but I'd never seen one. It holds his scope as well as my UniStar Deluxe holds mine. His scope may be a bit lighter but it's longer and presents a very similar load.ever g

If you wouldn't mind maybe you could try your AT115 on friends M2 for me?? I am going to play around with some recommendations I got for TWII but NOT going to go crazy dumping much $$$ in to the TWII.  I have been eyeballing the AZ8 since they forever. Their is another thread where someone purchased one and also has a TWII and there are pictures. The TWII looks so much more beefier then the AZ8 but the Losmandy has to be better given reputation.

I mean there is nothing mechanically wrong with my TWII, I think it's just putting that AT115 on one side without counter balance - it's just too big a scope to use on those dual clamp mount without another scope. I don't really need the dual clamps as it's impractical to have 2 scopes pointed in the same spot anyway. Last star party at my farm house someone borrowed my TWII and had 2 100mm refractors on it and it was solid - they were both 900mm with a 5mm eyepiece too so even higher magnification then what I was using. However, I bet my AT115 weighs as much or more than the 2 ED100s on 1 clutch where as he had the weight distributed evenly. Oh well... I figure something out. Need to play with it a bit more too.

12
Will the software be usable for other Celestron mounts?

13
Beginners Forum / Re: Aperture vs. Size of Secondary Mirror Obstruction
« on: January 31, 2018, 02:14:33 AM »
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Thinking about a stable, portable, easy to set up scope that will be used mostly for planets but also brighter DSO. I’m considering a 6” F8 dob (Orion XT6 Plus) and an 8” F5.9 dob (Orion XT8 Plus). The 6” has a secondary mirror obstruction of 34mm while the 8” has a secondary mirror obstruction of 47mm. For both scopes the obstruction to the aperture, by diameter, is 23%. Which scope will give better contrast and detail on planets? Will the bigger aperture of the 8" and the use of higher magnification more than compensate for its larger central obstruction? I'm attracted to the lighter weight and easier handling of the 6". Thanks and best…

If both secondary mirrors have the same obstruction percentage by diameter, then the contrast reduction between the two should theoretically identical. This means by default, the 8" will be the far superior choice for extracting planetary details.

But even if the secondary obstruction of the 6" were say, 20%, and the 8" were say, 30%, the 8" would still be the superior choice. The extra brightness at higher magnifications from the 8" *more* than makes up for the slight loss in contrast. Moreover, the 8" is simply going to extract more details from planetary and lunar features than the 6" is capable of.

For fainter DSOs, you might be able to argue that the marginally higher contrast of the 6" will reveal ever so slightly more faint detail in a few very specific cases, but the 8" in general is just going to be showing you more. At the same exit pupil, you'll have a 1.33x larger image scale, which will be significantly more beneficial than any slight contrast disadvantage of the 8".

14
My scope is has similar specifications to yours - 120mm APO with a 900mm FL vs. 127mm with a 952mm FL. For deep sky observing I really don't ever use a magnification greater than 164x (5.5mm Meade UWA) or a 0.7mm exit pupil. For the Moon it is seeing dependent. Using a 3x (3.2x) Televue barlow I have pushed to 525x on the Moon on nights of excellent seeing. One night I even pushed to over 800x. These magnifications only work on the Moon with a 5" aperture scope.

If you really want to keep using the zoom eyepiece at these magnifications and test the capabilities of your scope then you might want to start with the 3x TV barlow. It costs less than the Powermate and basically picks up the magnifications where your zoom leaves off (24/3 = 8) So effectively with the TV barlow you are using FL from 8mm to 2.7mm. If you toss in a 1" blue fireball extension tube the 3x TV acts as a 3.75x barlow.

So if you went with the 3x TV barlow at the 8mm setting you would have a magnification of 357x or with the 3x TV and a 1" extension tube 446x.  The problem with a 5x barlow is the 24mm setting x 5 gives you 198x. So you would jump from 119x (8mm setting) to 198x (24mm setting x5) and it is possible that on many nights seeing conditions will prevent you from using 198x. I have a lot of nights where seeing conditions peak out around 130-165x.

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Light Pollution Topics / Re: The City Dark will air on PBS July 5
« on: January 31, 2018, 01:52:37 AM »
Quote
I think the point of the program is to take the issue to a larger audience. Rather than thinking there's nothing new to us (the people who are educated on the subject) perhaps we should be thinking of ways to get this documentary in front of the people who never even give lighting a second thought.

Yes, that's it exactly.

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