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Messages - witchcycsuti

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Yes, Chile! But since you can't drive there... AZ, NM, CO & UT. I've camped there several times -- very dark skies & lots of daytime activities within 250 mile radius of the 4 corners... TexOkie Star Party, Big Bend Star Party, Arches Nat'l Park star party. Enjoy the Dark!

ATM, Optics and DIY Forum / Re: Schief vs Newtonian comparison question
« on: February 09, 2018, 02:06:36 AM »
Miaden Think Televue made a top of the line Chief anything come close //

Finally got the motherboard out! Was a little tricky, but I managed. Also, I've taken a close look and I've spotted a blown out capacitor next to C1!

It's on the bottom right hand side.

Re-reading your post, are you saying that the main focuser tube does fit, it's just the screw holes that don't? If so, that's way easier to deal with than the big hole being too small. If it's the big hole, let us know, and we'll guide you through that.

Put the focuser in place, wiggle it around till it seems to be parallel with the tube and not tippy-rocky, and drill one screwhole, using the base as a guide. Put a bolt through that hole (doesn't have to be the one you're going to use in the end, it's just to keep everything lined up) and wind a nut on it. Now, with the focuser fastened so it can't twist, drill the other holes. You might have better luck if you just drill a little bit with the full-size drill bit, so as to make a small center-mark in the tube, then switch to a small drill bit, maybe around 1/8" or a bit smaller, drill through the tube with that one, then switch to your full-size bit and re-drill the holes.

Stick a vacuum cleaner end into the scope and clean up all the chips before you move the tube, they're not something you want skidding around on your mirror later.....

Cover your secondary with something (a small ziploc-type bag works well) to be sure no debris lands on it.....

There is a reason Telrads are so "hip"; they just work. Even in light polluted skies, they can be used to find non visible objects using a little geometric imagination. It's a quality piece of gear.

Yep!. For a DOB a Telrad or 1x reticle finder is indespensible. Red dots are fine, but the concentric circles of a Telrad or similar make finding those dim fuzzies easier. That could be another discussion tho'!


Reflectors Telescopes Forum / Re: Servo Cat possible inputs
« on: February 02, 2018, 03:50:04 PM »
Just to add something further that I touched on in my previous post.

When using a wooden dobsonian telescope that is continually transported from place A to place B, spending 5 minutes at the beginning of each observing session and defining an accurate TPAS pointing model, (10 to 12 stars) with a DTC like Argo Navis that hasaccurate inbuilt Telescope Pointing Analysis Software, will provide significantlygreater gains in pointing accuracy than could possibly be achieved by going from 10k encoders to 32k encoders.

With a wooden dobsonian telescope that was permanently housed in an observatory and never moved, there may be some very slight gains in pointing accuracy to be had by upgrading to 32k encoders because a detailed accurate pointing model could be defined and retained permanently, as the pointing errors inherent in the construction of the telescope would remain unchanged, excepting for slight changes / movement of the telescope structure due to changes in weather conditions / humidity.


General Astronomy & Observing / Re: Tree in the way... ethical dilemma
« on: January 31, 2018, 01:27:04 PM »
Two questions: (1) Other than being a tree, what does it do for you? (2) How much more sky would be open in its absence? If the answer to (1) is, "Not much," and the answer to (2) is, "A lot," I recommend removing it and planting one or two others elsewhere, maybe in your front yard where they wouldn't interfere with astronomy.

I'm a Barlow fan. I got a 3X that works well with my 68* ep's. Saves me some money because I don't need high power ep's like a 5mm or less. Mark

Beginners Forum / Re: Cheap Companion
« on: January 31, 2018, 11:09:55 AM »
I had a Firstscope for a while. The included eyepieces were horrible. It wasn't bad after I replaced those with a 20mm Kellner, 6.5mm Plossl and a 4mm Plossl. I could see 2 cloud bands on Jupiter and Saturn's ring at opposition with it. The moon looked good too. But it only had a maximum 75x magnification with the 4mm Plossl and very very short eye relief. It was ok as a 'first' scope as a beginner when I really didn't know what to expect. But if you're already an experienced astronomer, you will probably be disappointed.

Beginners Forum / Re: Seeing galaxies with a refractor
« on: January 31, 2018, 10:35:26 AM »
I guess I should also add that since many people have said I should use a 10" reflecter for the faint DSOs. I think I'd rather go crazy and do 14" or 16" in that case....I think having the 6" Newtonian in the meantime would make for a nice in between scope between the 80mm refractor and a much larger Dobsonian and puts the increase of aperture closer to about 400% between each telescope.

I think Jon is right about the 10" dob being "a sweet spot" for capability and ease of use. I just got a 6" dob as a backup and there really isn't any comparison to the 10" in the city. This thread may also be helpful: http://www.cloudynig...ight-pollution/

Eyepieces Questions & Recommendations / Re: Barlowing a Nagler 13T6?
« on: January 31, 2018, 10:32:46 AM »
My 13T6, by itself, stole the show last night in my back yard. It was spot on when viewing Jupiter. Then with my 2X Powermate it performed admirably. Believe I enjoyed the 13T6 more than I did the 7T6, though, but that may have been more about my vision. Other than that, I really enjoyed these three pieces. Can not even imagine how an Ethos would have performed, but who knows, maybe someday. But as of right now I am really enjoying my T6 eyepieces.

One of the most important things I try to focus on while working with the public is making sure they everyone possible comes away from their visit with a very positive feeling about astronomy and especially their astronomy experience on Mauna Kea.
With what's going on there, it very much looks like providing the public positive experiences with astronomy is even more important than ever, and to garner support for the science programs continuance.

Good luck with the maintenance and managing the public!

I took the survey. Not surprised by the results. To bad this is such a male dominated interest. Anyone have any thoughts on this?.......

I’m thinking that there are more females than show here because female amateur astronomers tend not to spend a lot of time on CN –they are less into “equipment” and more into “observing and science”. ( Also true of the several professional female astronomers I know. ) Of the female amateurs I know roughly80% are the wives of male amateur astronomers and they let their husbands worry about the equipment – they just use it.

I did meet one interesting lady last summer at Stellafane, who had entered her Dob into the ATM contest (didn’t win, but it is a nice scope). Her career was also interesting: She works for a company that sells hand made mountain dulcimers, with each instrument hand-crafted by one person. She has been making dulcimers her entire adult life. She had to learn how to play one in order to test the ones she makes.

Light Pollution Topics / Re: Los Angeles LED Lighting Effects
« on: January 31, 2018, 06:18:03 AM »
I understand the snow reflection factor, but aren't your streets plowed soon after a snow? My brother lives in South Lake Tahoe, which averages 125 inches of snow per year. Their streets always get plowed after a snowfall, and after a couple of days, there is almost no snow on the street, even though there is plenty of snow on the landscape. So even though there is a lot of snow, there not too many nights in the winter where the street is snowy white.

Since cutoff LED fixtures radiate the majority of their light onto the street, wouldn't the most significant problem only be for a couple of days after snow?

When you look at the whole year, how many days out of the 365 have white streets? I guess that answer depends on where you live.

Wouldn't it be better to have a few days brightened by cut off LED lights shining on snowy streets than to have 365 days a year brightened by Cobra head HPS street lighting? Even if you have 90 days/year of snowy streets, isn't that better than having every day unnecessary LP from old non cut off fixtures?

General Astronomy & Observing / Re: When do you usually hang it up?
« on: January 31, 2018, 01:11:16 AM »
Hang it up? Just can't do that. Gotta take a clear night without the moon when it comes regardless of temperature. I am curious that, in Detroit, you (OP) quit till mid January. This can't be temperature related. My records do show that December is a low month but typically January and February are pretty good.

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