Astronomy & Astrophotography - And all things astronomy-related, among which

Fibonacci

Koning der Pijpbeurt
kiwifarms.net
I recently decided to get off the couch and venture outside to explore the great unknown by sitting in my backyard with a telescope. Godbear only knows why I suddenly felt this urge to take on such a complex new hobby, but nevertheless I have and I am very slowly acquainting myself with the tools, gang signs and slang terms used by those in the game.

After staring into the void, the voices of a thousand amateur astronomers called out to me and told me that the most cost effective and functional telescope for a beginner to purchase is called the AWB OneSky 130mm Newtonian reflector, as pictured here below:

51B2480C-7483-490F-87F7-87451776B899.jpeg

At a modest 5" in aperture (usually 6"-8" are recommended for beginners not on a budget), its primary mirror is still allegedly capable of catching the light of Jupiter, Mercury, Mars and even many deep space objects including star clusters and messiers. This telescope is a custom creation of the organisation, Astronomers Without Borders, and manufactured by Celestron. I also purchased an accessories kit with extra eyepieces, filters and a 2x Barlow (on the off-chance that I ever upgrade my altazimuth mount for an equatorial mount for to make astrophotos and such, among which).

7B918E07-A696-431A-B216-F17110643C3F.jpeg

Admittedly, I struggled with the most basic first step in setting up my telescope: collimation. The included instructions were filled with many big words and satanic symbols, and I didn't really want to juggle a thesaurus, my phone set to Wikipedia and a bunch of telescope parts all at the same time. After a little frustration and some advice from my local astronomy club, however, I did finally manage to get an acceptable alignment between the primary and secondary mirrors, and discovered that my phone camera can actually take photos through the eyepieces, no matter how small the pinhole on the piece.

AF052178-04F4-44FF-A3C7-29D684B82356.jpeg

So last night I decided to bring my scope with me to work. Unfortunately, the entire sky was shrouded in clouds most the night, but around 0330 hours I got a lucky break, and for a good 20 minutes the sky was clear enough for me to drive down a dark service road and set up on the shoulder. I used the Super 10 long eye relief ocular included stock with the telescope and managed to capture a couple neat pictures of the Moon (waxing gibbous):

F4D26B9F-56BD-4D13-B65B-7C7FCDD77AD9.jpeg759FCFD8-6F4E-48AF-AA08-1D5D60C7580F.jpeg

I also purchased a copy of Terence Dickinson's Nightwatch, which came highly recommended by members of the Cloudy Nights astronomy forum, along with a planisphere and some star charts for my region. It is a delightful read and I'm really glad I got it.

420B3F80-F5D6-470C-B2AB-1404770EE24F.jpeg

I know it was the most basic thing I could have started with, but it was still really exhilarating spotting the Moon through my telescope. It looked even better than in the pictures! I'm already excited to learn more about my equipment and how to use it properly and read the night sky.

Some things I know I need to do next: I still need to align the laser on the finderscope - it's currently aiming about 10 degrees higher than where the telescope is actually pointing, and I'd also like to build a "light shroud" to cover the hollow half of the scope where it collapses to further minimise the amount of light pollution messing with my secondary mirror (there's a few guides online where other OneSky owners used foam sheets from a craft store to create a tube insert that can collapse naturally with the rest of the scope).

So what about y'all? Any other Kiwis here into astronomy? Got any tips? Post your telescopes, astrophotography setups and other star shit here.
 

Clown College

You ain't about shit and your hair ain't neither!
kiwifarms.net
Still debating on whether to get a star tracker so that I could spend more time doing astrophotography of stars, planets, galaxies, and nebulas. Right now I have to hope the weather will cooperate and wait for the new moon every month so I can photograph the milkway. Speaking of which new moon is on Friday so I might head out to the desert to see if I can get some good milkyway shots.

If any of you kiwis have star tracker recommendations let me know, I'd love to know your thoughts.
 

wokelizard

kiwifarms.net
Awesome! I've always wanted to grind my own mirror.. it's super fascinating to me that if you rub a bit of glass the right way for long enough with grit and pitch and tiles you can focus photons emitted billions of years ago that have travelled all the way across the universe right into your eyeballs, that humans are capable of hand-making instruments with surface profiles accurate to a quarter wavelength of light. I'd love to hook it up to a cheapy dslr and try stacking exposures over time too, figuring out how to pick the best hundred shots to synthesise better images from the data. But it's so light polluted here... I cried at how clear the sky was at 3am in the middle of the australian outback versus here.

Any luck seeing comet SWAN? (oops atlas already disintegrated :<)
 

Fibonacci

Koning der Pijpbeurt
kiwifarms.net
Awesome! I've always wanted to grind my own mirror.. it's super fascinating to me that if you rub a bit of glass the right way for long enough with grit and pitch and tiles you can focus photons emitted billions of years ago that have travelled all the way across the universe right into your eyeballs, that humans are capable of hand-making instruments with surface profiles accurate to a quarter wavelength of light. I'd love to hook it up to a cheapy dslr and try stacking exposures over time too, figuring out how to pick the best hundred shots to synthesise better images from the data. But it's so light polluted here... I cried at how clear the sky was at 3am in the middle of the australian outback versus here.

Any luck seeing comet SWAN? (oops atlas already disintegrated :<)
Swan is supposed to be visible at my astronomy club's star party on Saturday, but I have to work that night. 😥
 

Fibonacci

Koning der Pijpbeurt
kiwifarms.net
I've taken to doing a little more mediocre photography. Got a much better close-up of the Moon just before moonset tonight and also been taking naked eye pictures of various constellations with my cellphone and drawing in the lines to make them easier to see.

E0D29D1A-7F0F-441E-A312-F08E0CBA7445.jpeg

The upper half of Scorpius:
AC8A6CF9-1886-4D24-A1C6-C67C24B70777.jpegF291E6BF-B9C8-4250-ADB6-70BB206ECDF6.png

Ursa Major and Canes Venatici:
B84EAF25-4E1F-4563-83DD-10D5E68787FB.jpeg781F3808-4515-4CFC-A773-D3ECBF7E979F.png

Ursa Minor:
F165E025-3F0F-4562-8851-C77B6256CA8B.jpeg888DE986-DA75-4A78-81E1-20A6AD96F228.png

Leo:
67CF3D16-56BF-4CFC-85C4-226E67A76CAC.jpegBC6F620F-360B-458C-A8A0-A39756993916.png

Corvus:
1EB9B346-B366-43D0-879D-37573B186675.jpegDB27E385-D746-4A87-8488-D6FAC3A8D2F4.png
 

Dr. Sexbot

The Positronic Pimp
kiwifarms.net
Good luck! It's a fun hobby once you get your bearings.

For collimation, for the love of god, get a collimation laser ($20 ebay for the "Svbony" one I have) -- I never even bothered with that pinhole mask shit. You just drop the laser into the eyepiece mount, dial in the mirror, and blam, done. Note that you need to align the collimator the very first time you get it -- search or ask me how to do this if you need to. Any time you move your scope, you risk knocking the mirrors out of alignment. You definitely want to check the collimation at the beginning of each session, and the laser makes that super quick.

For focusing, 3D-print or otherwise make a Bahtinov mask. There is a customizable one that you can easily adjust to your scope diameter. Not essential but a very handy thing to have, especially if you have to wear any kind of corrective lenses and want to do photography.

Once you're dialed in, you will definitely be capable of seeing Jupiter clearly enough to make out some banding, and Saturn well enough to see the separation between the planet and its rings. Mars is a lot closer but still pretty tiny, so don't be too disappointed with it.

If you want to get into astrophotography, you're going to want to make or buy a motorized Az/El mount (like the one you already have, just with motors -- you might be able to add them to that mount if you print some gears and such). You can find them relatively cheap (I have an Orion / Synta mount). This lets you track objects across the sky, for long exposures that don't blur out.

If you want to roll your own star tracker, look at the EQMOD project. I'm in the process of building such an interface for my Az/El mount so I don't have to shell out fucking $500 for the handheld tracker.

Also, look at a technique called Lucky Imaging. You can get great results with a shit webcam, given enough exposures and some (free) software magic.

Grab some more astronomy PDFs off Avax or wherever, you never know what you'll find interesting!
 
Last edited:

wokelizard

kiwifarms.net
HEY LOOK! IT SATURN!

lolsaturn.jpg


This was taken with my canon M50 and my 400mm lens at f/16 for 0.25 sec at iso 200

It was the very best I could get. I think I need something to help me nail focus AND an actual mirror telescope rather than a blurry stack of lenses AND something that can track it because it was literally moving across the viewfinder when I was super zoomed in and anything longer than about a second blurred it in the direction it was going in AND i probably want to shoot raw and try to stack loads of photos like youtube tutorials AND i probably need something a bit longer than 400mm

but it definitely saturn!
 

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