Space Time Live - S2E19 - M57 Through a Meade LX65 8” ACF
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- Опубликовано: 6 авг 2024
- Telescope: Henrietta (Meade 8" ACF + LX65 $1,339) bit.ly/3OCj58J
Planetary Camera: Fritz (ZWO ASI 294 Uncooled $699) bit.ly/3oGaYMT
Live Stream Camera: Iphone8
Field Computer: Surface Pro 4
Recorded: August 18th, 2021
Orion Telescopes: www.pjatr.com/t/S0BMQ0pFQEVHS...
We revisit the Ring Nebula and gaze at it's stellar remnant resting within. Deep within the ring of glowing green and red gas is a white dwarf: the remaining core of a star that was not unlike our own.
Near the end this star's life, it swelled into a Red Giant. The upper atmosphere of this Red Giant was far from the star's core, and had such weak gravity that lighter gases began to blow away into space.
Meanwhile, the inner portions of the star, still close enough to the core to feel strong gravity, collapsed into it's current state.
No longer able to produce light through nucleosynthesis, the faint white spec we see is visible due to built-up heat slowly being released as white light, and should do so for the next few billion years.
www.nasa.gov/feature/goddard/...
Thanks for joining us on this observation and clear skies!
00:00 The Ring Nebula
09:20 The Setup
11:30 More M57 
Наука
wow dude.. that’s awesome.. … just look at it.. jeepers. 👍🏻
Heck yeah thank you, Jesus! Clear skies!!
@@spacetimewithrobert4438 you are the greatest . and your channel is one of the most astronomical channels in the galaxy. fullstop.
thats insane
Indeed! Sweet name. Clear skies!
Really good! Thanks! 😉😉 So, It is possible to astrophotography DSO with this telescope?
Absolutely! It does require longer exposures at F10 but the contrast and magnification this telescope offers is incredible. The coma-free optics also make it an excellent telescope for Astrophotography.
However, the LX65 mount is not suited for imaging! If I want a nice long-exposure (30-seconds or more) than the LX65 mount that comes with the Meade 8" ACF would be a poor choice. Luckily the 8" ACF comes with a long dovetail so you can mount it on other tripods.
5-20 second exposures are still possible on the LX65 given good conditions and setup, so EAA and Live-stacking is certainly a possibility. But for the best results, we've found long focal length telescopes such as the 8" ACF seen here work best on sturdier mounts like an Equatorial.
When I use Henrietta on the LX65 for Astrophotography, I often lose half my 20-second exposure images due to tracking errors and slight gusts of wind. When I use it on my Losmandy G11, I can easily exceed 60 seconds and keep almost all of my frames.
So, definitely a great telescope for AP so long as you have the right expectations for exposure times depending on whichever mount you have it on is my ultimate opinion!
Lastly, the focuser for this telescope could be better. It works great but it's not a fine focuser. We upgraded it to have a 2" 10:1 Crayford attached to the back and focusing has been a dream with this telescope since.
One more thing: we got lucky with Henrietta since it never has needed collimation. We've owned it since 2020 and taken it on many bumpy road trips. 3 years of brutal service and it still has flawless collimation. There is a service tag on the back with the initials of the manufacturing team, and they are my heroes! If you ever get a Meade 8" ACF I hope it's as good as Henrietta!
Hope that helps :) Clear skies!