Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.

Messages - Zachary Patterson

Pages: [1] 2 3 ... 9
Mounts Questions & Expirience / Re: Polemaster final alignment help
« on: February 09, 2018, 11:19:24 AM »
This also happened to me - I bumped up the camera exposure a notch, and it seemed to fix it.  Not sure if that was really the cause though.
I hope the next version of the software is more like the method used in sharpcap 2.9.  So much easier:)

General Astronomy & Observing / Re: Enhanced Vision Telescope Shown At CES
« on: February 09, 2018, 06:07:35 AM »
I did do the demo with the guys Friday evening, 6 January,and used my 16-inch for comparison. I'll give a more detailed report and my thoughts later when I have time. I'm at work now.

JMHO, there's no such thing as a "navigation/finder" either have a well corrected low power eyepiece, or you don't.  Depending on the scope, this may or may not be expensive. A fast dob will chew up and spit out eyepieces that work great in a long fl refractor.

I have a well corrected low power eyepiece that's mostly used for a navigation/finder duty now because the astigmatism in my eyes is no longer correctable at a 4mm exit pupil. I use it's wide, well corrected field to find objects and then switch to a equally well corrected medium power eyepiece with a smaller exit pupil to study them.

The low power EP is a 24mm Panoptic and the scopes are a mix of refractors and Newts between f6 and f8 that worked very well together for many years.In this case, the problem and its mitigation have little to do with the scope or the eyepiece.

I just gave in and bought all I I'm retired and broke....but I have enough eyepieces to keep me going.....TeleVue's are part of that, along with ES and Pentax and Nikon....

My 2nd childhood is gonna be enjoyable....

Reflectors Telescopes Forum / Re: Need to re-balance a dob
« on: February 02, 2018, 08:50:12 PM »
Use a router to cut a channel in the bottom edge of the mirror box.
Pour lead into the groove, filling to 90% or so. Lead weighs 0.41 pounds per cubic inch. Be sure to subtract the density of the wood you remove (IIRC, Baltic Birch runs about 0.026 lbs/cubic inch).
After the lead cools, pour polyester resin (fiberglass minus the fiber) over the top, flush with the wood surface.
Sand and paint. No one will ever know it is there.
Since the lead fill will be located somewhat aft of where the mirror was, you will need slightly less weight than the change in the mirror.

Can't - the scope hasn't a shred of wood in it being all Aluminum.

What you need is this 60mm f/15 refractor to observe with for a while...

You'll run, screaming, back to that 130mm f/5 mini-Dob in no time.

General Astronomy & Observing / Re: Infinite Space
« on: February 02, 2018, 01:46:15 PM »
I always liked the idea of the "Big Crunch" better than the "Big Rip".

I don't like the sound of either... I think I would just rather go quietly into the night...

Reflectors Telescopes Forum / Re: Making of a 4-1/4" long focus Newtonian
« on: January 31, 2018, 01:43:40 PM »
Great stuff! Do keep the reports coming...

I'm no DIY, but watching this stuff be thought out and put together is fascinating.

I also have two 4" mirror blanks in the basement that I should think about doing something with. Maybe a local club will have a mirror making course or workshops that I could attend to create a scope akin to your project. I'd probably go for about half the focal length to create a smaller, more manageable tube, and wider, richer field views...

ATM, Optics and DIY Forum / Re: Spacing of doublet objectives
« on: January 31, 2018, 12:30:49 PM »
I don't have a flat large enough for doing indoor full aperture testing indoors.

So I want to be able to use the Ronchi eyepiece grating using my refractors on the stars.

I'm afraid this is high-jacking the thread...

General Astronomy & Observing / Re: Upcoming trip to Kona, Hawaii
« on: January 31, 2018, 11:00:48 AM »
I'malittle familiar with Hawaii having lived and worked there full-time at Haleakala Observatory on Maui and at various times on the big island on Mauna Kea at the C,F&H Observatory starting in the early 80's.

All of the Hawaiian islandsare beautiful...but they are all very expensiveplaces to live. In fact...if you unfortunately run out of money (become broke) while you're vacationing in Hawaii...then you have chosen therightplace tobecome a member of the nation's largest homeless population >https://www.nytimes....eless.html?_r=0

If you enjoy spending big money on everything....including pizzas....then the big island of Hawaii is waitingfor you > http://www.latimes.c...-htmlstory.html

P.S.You'll also be happy to know that Astronomy on the big island is still looking up! > http://www.aloha-haw...and/stargazing/



General Astronomy & Observing / Re: SO SICK of this BAD weather!
« on: January 31, 2018, 08:49:28 AM »
This is my local weather from news 12 lol!!

Sunshine is expected by Thursday, finally! Thursday's highs will be a touch above seasonal near 74 degrees. It remains pleasantly warm into Friday with a mix of sun and clouds. Thursday night's low will be 56.

After that is back to the UK weather..

Beginners Forum / Re: Help me spend a couple grand, please.
« on: January 31, 2018, 08:12:05 AM »
I vote goto 8in sct. Easy set up and control, cheaper eyepieceswork well at f10.Pluse youcould have room for some eyepieces and dew control items in your budget.I like my Evo 8, wifi control can be buggy at times but still worth it in my view.

I set up the scope, set the alarm, go to bed...when alarm goes off, I have 2 choices. Since the scope is already set up, "it beckons me to come play." How can one resist?

This, going to bed at 9:00, and suffering from insomnia.

ATM, Optics and DIY Forum / Re: Construction new dobson 24inch
« on: January 31, 2018, 05:54:05 AM »
How will you be providing edge support to the mirror? With a sling?

absolutely not, 2 side support points to 45 ° on the vertical with ball bearings on the center of gravity

Eyepieces Questions & Recommendations / Re: Alternative to Delite 4mm?
« on: January 31, 2018, 04:22:16 AM »
4.5mm Delos. There really is nothing better IMO. Not even remotely heavy.

I guess you didn't read the OPs single sentence post?

Pages: [1] 2 3 ... 9