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Topics - Luka

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General Discussion / 2.5 gigapixel, 500+ hours of Orion
« on: September 27, 2020, 12:45:42 AM »
This is the largest, highest resolution image of Orion that I've ever seen.

Perhaps this will grace the side of Randy's motorhome one day.

General Discussion / PBS documentary about the telescope
« on: April 18, 2019, 09:59:50 AM »

Great documentary about the telescope and what it has allowed us to learn. Also, its narrated by Patrick Stewart.  It says it's available until 5/15.

General Discussion / 46P / Wirtanen
« on: December 11, 2018, 09:54:34 AM »
I saw the comet last night.  I loaded it into Stellarium, and then saw it was near Menkar, and right by 96 Cetus. I drove out of town maybe 2 miles, on county 25 towards keller. It was easy to spot with 7x binoculars.  I didn't see any tail, but I wasn't very far out of town so the light pollution was plentiful. Maybe on the next clear night, I'll have more time to drive to Keller, and get a better look at it.

General Discussion / Phone adapters(even cheaper)
« on: January 17, 2018, 11:33:34 AM »
Found this clone of the Orion adapter.  The $10 shipping charge from Orion(on a $20 item!) kinda annoyed me, so I looked around.

Mine should be here in a few days, I'll let you know if it's similar enough to be worth it this weekend.

General Discussion / Total Solar Eclipse in Nebraska
« on: August 15, 2017, 10:36:41 PM »
For those that can travel, and will be in SE Nebraska, maybe you could post here. We might want to exchange phone numbers, email, and any other contact info to coordinate. I personally would love to hang out with some of you during this event.  I'm not sure that posting phone numbers on the forum is the solution, but we could at least have a list to email people.

Edit: Send info to Randy. See his comment.

General Discussion / Help Needed in judging science fair
« on: April 04, 2017, 01:49:03 PM »
Hi everyone. My wife works for the Zumbro Education District(made up of 7 small school districts around Rochester, like Stewardville, Byron, Kasson, Pine Island, etc), and they are having a tough time finding judges for their science fair. If any of you are available and interested, it's in Kasson from 12-3:30 on Friday, April 7th. For more details and/or to volunteer, please email my wife at . Thanks!

General Discussion / Mercury transit
« on: May 09, 2016, 11:42:13 AM »
I got out this morning before the clouds got thick to see the Mercury Transit and to show my sons. I snapped a few shots with my cell phone as that's all I had time for. The picture is at 46X through the eyepiece.

General Discussion / Notes on ES102 and Daystar Quark
« on: October 26, 2015, 09:45:13 AM »
Wow! This combo is every bit as good as any H-alpha scope I've seen. Unless you really want to see the whole sun, which it won't do. (If anyone has a 66mm scope, 430mm focal length, then you can see the whole sun). But it has tons and tons of detail to see, and the sun changes quickly. I saw a prominance change and then disappear in about 30 minutes. Sunspots move more slowly but a day apart reveal many changes. I've also noticed that some details look more or less noticeable when in the sides versus center of view. So it looks like there isn't much on the left side of the view, and as you pan that way, you see new features become more contrast-y and noticeable. This is especially so for areas that are darker than the surrounding region, but not as dark as a sunspot. Over MEA weekend, my whole family was in town, and I got to share the views with them. One of my brothers spent a good  30 minutes observing with me. My littler boys insisted on seeing what I was doing and liked the view. The oldest son and his friend stopped to take a look as well.

A couple more notes:
The Quark has orange and green LEDS under the indicator light. I believe both are lit when warming up, and then it goes solid green when it's ready.

You can use one 48mm extender tube on the scope, and then put the Quark in the 2" diagonal directly. Otherwise, you can use no extender tube and put the Quark in the 1.25" adapter on the diagonal. Using both will not allow focus, and using neither will also not work. One extender and 2" diagonal is less bouncy and more solid I think. There is a 48mm IR-UV cut filter that has to go on the diagonal to safely use the Quark with any scope over 80mm. I just left it on all the time, even with the white-light filter.

I also found it easier to use my own astro-tech voyager mount as that has geared movements, since the effective focal length is so long. The ES daul-mount is nice in allowing two views of the sun at the same time, but you will want to balance the scope very well and set the tension just right.

As Randy said the Quark takes a while to warm up. I usually plugged in the quark first, then set up the mount and scope, and then put on the while-light filter to find the sun and observe for a few minutes. When the quark was ready(<10 minutes), I'd center the sun in white light, and then put on the quark with eyepiece, and then quickly take off the while light filter after that. By doing it in that order, no dangerous concentrated sunshine will be focused out the back.

I also tried the Quark with my own 80mm refractor(C80ED), and that worked well. My scope is 600mm FL vs the 714mm  FL of the ES102. The difference wasn't huge, but noticeable(I did a very short comparison). Besides the 40mm eyepiece that's on loan with the kit, I tried a 25mm Orion ED-2. That worked fairly well, and allowed even more detail with smaller FOV. I also tried a 19mm wide-angle, and that wasn't so good. I think the wide-angle(68-degree) design just isn't suited to the quark.

Overall I think this is a wonderful addition to the club's equipment!

I also think we may need to come up with a name for this combo. Any ideas?

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