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Post by davy on Jan 9, 2018 23:58:04 GMT
Nice work Howie,,, just shows what you can do with a fast lens and good equipment
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Post by howie1 on Jan 10, 2018 2:24:30 GMT
They are really quite amazing Howie. Reckon its faster than you are saying. The dust around M42 is coming out really well - I'm sure I wouldn't see that unless I did longer exposures. And you're right, I'll probably go for a carbon fibre 8" F4 when I see one on IIS. So you have the camera and the lens secured? Thanks Chris. 8" f4 cf newt ... !!! ... Now you're talking Chris! An 8" f4 in carbon is my dream scope! Lighter than my steel tube 8" on the HEQ5 PRO, and f4! Just crying poor at the moment after Xmas n all Re secure lens! .... LOL ... yup, I reckon the lens and camera are mightily secure! ... LOL. Having said that, it was done because of suddenly seeing the lens and camera undo itself and swing down vertically under the mount head. If you imagine the camera over on its side due to the EQ RA rotations, then with the heavy lens stuck way out in front of the 1/4" camera connection back underneath the camera body ... gravity did its thing! The weight of the lens overcame the friction in the 1/4" connection so it would just let go and swung 90 degrees! So having the guidescope ring at the front stops gravity from pulling on the lens and undoing the 1/4" connection under the camera when its held at EQ angles. I just this morning drilled another hole for the single guidescope ring. The 3 bolts clamped down on the actual focusing ring of the lens. Meant that after focusing I'd tighten down the three bolts and they'd ever so slightly move the focuser a tad. Just breath on a DSLR lens focus ring and it changes the focus! So the guidescope ring is now more further forward. Now the three screws tighten down on a fixed bit of the lens, leaving the focus ring clear (and hopefully, in focus!).
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Post by howie1 on Jan 10, 2018 2:26:56 GMT
Nice work Howie,,, just shows what you can do with a fast lens and good equipment Thanks davy. One things for sure ... the HEQ5 is no longer overloaded with a steel 8" Newt + finder + camera etc.
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Post by howie1 on Jan 10, 2018 2:34:19 GMT
I took HD desktop capture so I could review all the settings and the images during the night. I cut it down to just the 4 minute bit where I slewed to M42 and took that image I posted up before. The 4 minutes includes punching the HC buttons to tell it to go to M42, then includes the slew to M42, then includes the 90 sec exposure and the 25 seconds Toaster stretch. It'll show how once those Toaster settings are dialled in for the lens and an exp time, you can simply slew and shoot, slew and shoot. Cheers. ps Adjust the Youtube setting cog to watch in the high def 1080p setting, then hook it up to your 60" tv. Its pretty sweet.
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Post by ChrisV on Jan 10, 2018 9:39:24 GMT
That's sweet Howie ! Do you ever take flats and correct for them, or don't you need it with that DSLR/lens combo
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Post by howie1 on Jan 10, 2018 11:24:29 GMT
Thanks Chris. Haven't christened (IIS Peter's) lightbox yet. Hoping to get out soon to give some proper AP a go. So no flats done with the ED80 nor the new 135mm lens. Cheers
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Post by Dragon Man on Jan 10, 2018 12:14:58 GMT
Howie, a slight correction to your video
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Post by howie1 on Jan 10, 2018 12:36:25 GMT
Thanks Ken, I had never heard of the GMC! Another learning moment and that's why we do it ... Cheers.
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Post by Dragon Man on Jan 10, 2018 14:14:37 GMT
Thanks Ken, I had never heard of the GMC! Another learning moment and that's why we do it ... Cheers. Yep, and not to be confused with the Sagittarius Star Cloud Here's some info about the Carina GMC I found for you: www.publish.csiro.au/as/pdf/AS98202
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