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Northern Lagoon Nebula
UC18 + LeNhance Filter + Mallincam DS10cTEC camera. Made an impromptu screen out of a tarp and a couple of sticks to block the streetlamp behind my house from getting into my camera.
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Rosette nebula
All, Here is a recent partial mosaic of the Rosette nebula from my Obsession UC18 and DS10cTEC. Richard
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M51 from my UC18 and DS287c (taken last year but processed today in Pixinsight)
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10 stacks of 10 second exposure and a bit of Pixinsight. I watched Adam Block for an hour today teach Generalized Hyperbolic Stretch on Pixinsight.
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UC18 and DS287 of M17 with stars removed by Pixinsight
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All, This was taken in my front yard that I share with a streetlamp. I used the Optolong LeNhance filter and lots of the Pixinsight tools to remove the stars, denoise, sharpen and then Gimp (I am still learning Pixinsight features, but know Gimp very well).
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A few images reprocessed with Pixinsight
All, Looks like my UC18 and DS287c really get some help from Pixinsight.
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M16 with some Pixinsight processing
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All, UC18 plus a DS287c camera plus a bit of Pixinsight processing.
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need for 12 V cable from power source to scope
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Hi Gang: Horrors but I have misplaced this crucial item and I didnt get this scope years ago to turn it into a "manual" model ! Any ideas on how to obtain it would be most appreciated ! Rich M
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Would you mount a PiFinder on your Obsession?
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Anyone considering replacing your Telrad with a PiFinder? Imagine adding plate solving on your DOB for push-to goto. Richard
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HUMBLE SOLUTION FOR ALT CABLE DISLODGING
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Hello everyone! My name is Steve Anolik I'm a newbie Obsession owner. I have been away from Astronomy for 30+ years and many things have stayed the same and many, many things have changed. I am the proud owner of an Obsession 15" UC F4 AN/SC that, for me, works like a charm. PLEASE, I do not want to get 'political' about this. Mine is bigger, mine is better, mine doesn't work properly, etc.For me, at 76 years old, this particular telescope fits the bill. Easy set-up and tear down for me and my fellow astronomer Mike. Easy to take to our local 'dark sight'. The eyepiece at zenith is at my eye level (no ladder). The glorious wonders of the universe at my fingertips! The frist many months were a challenge, to say the least. A big shout out to Greg Myers and Dave Kriege for all their patience and help for an 'old codger' and who put us on the right track. One of the biggest issues we encountered, and most persistent pain in the butt, was the hassle when the ALT cable gets dislodged. Here is my solution: A 1.23" key ring! As you can see in the photos, placing the key ring through the top most hole under the toggle switch is my answer. Once placed, the toggle cannot go down any further (to dislodge the ALT cable) and happens to be in the sweet spot (at least for us it works) to allow the ALT motor to run smoothly. Anyway, just wanted to say Hi and pass along a 'low tech' answer that hopefully can help others having this persistent problem.the way it has helped, and continues to help us. Steve&Mike
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Astro photos with a UC18
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All, The Mallincam DS287 (monochrome or color) camera can make your Obsession telescope even more fun (I use the UC18). The camera gives you about the same FOV as a 10mm eyepiece. The ServoCAT does my tracking and the MallincamSKY software can actually de-rotate/stabilize my UC18 to create great photos. I normally use 5 to 10 second exposures and engage the camera "stacking" of about 10 subs to average out the noise in order to increase the signal to noise ratio. I used the Optolong LeNhance filter in my Astrocrumb filter slide for the Witch's Broom nebula.
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New camera needs an extra inch
Hi all, My new Mallincam camera DS10cTEC ¡°may¡± need me to reduce the distance between the primary and secondary by an inch or so. I am playing with emachineshop.com to make a truss bracket replacement for my UC18 original bracket. When I get the camera i will first try adjusting the primary all the way up before deciding the final dimensions of the new brackets i am designing. Anyone else ever needed to modify their UC brackets? Richard
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Anyone going to the Peach State Star Gaze Oct 8-15
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Any Obsession owners planning to attend the Peach State Star Gaze in Georgia? I am hoping to upgrade my astro camera prior to the event (might be my fault if it rains). If you¡¯re interested in visiting the astronomy village, the Atlanta Astronomy Club hosts a Peach State Star Gaze each year at Deerlick, and this year it¡¯s being held from Oct. 8-15, 2023. Richard UC18
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Reattaching the altitude motor drive wire on my UC 22
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I am at a star party 30 minutes north of the Grand Canyon National Park North Rim for the week, and my altitude drive wire came undone. Someone probably lowered the scope to horizontal and it jumped off the track. I can't get it back together. I don't remember how many loops it makes on the drive spool, or what direction it needs to go. I can't seem to get the wire into the center track. The wire seems too long with one turn around the spool, or two short with two turns. Any help would be appreciated. Gene Fioretti
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An Eagle for the UC18
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All, Just thought I describe the configuration details of making a remote obsession UC18. Putting an Intel I3 on your Obsession might seem a bit extravagant, but Primaluce offers a line of computers targeted at the Telescope market. Start with the power that is available in remote locations: battery power. The Eagle4S that I purchased will use up to 1 amp at 12 volts. My 55 amp hour battery is an AGM type so I outfitted it with a voltage regulator to maintain 13.8 volts until it runs out of power (about 11 hours driving my rig). The Obsession gets all of the power through the powered ground board with a pair of rotating contacts. The Eagle4S has: 1. Power distribution (2 ports that can provide up to 8 amps and 2 ports that can provide up to 3 amps). There are also 3 ports that have programmable voltage output for dew heaters and fans etc. 2. an onboard SQM that measures the sky quality in a 5 degree FOV of the sky where the Obsession is pointing. When I record my observations, I like to know the quality of the sky and record that value in a database. 3. an onboard GPS to know time and location of the observations. 4. 8 GB of DDR3 memory to run all my software: a. Stellarium to slew my obsession and help me plan my evening targets b. Pegasus control for my fancy USB hub (operates on 12 volts) that can run each port with a different protocol (USB1 - USB3) at the same time c. My own software written in Visual Basic to change filters, and collect data from all the sensors and Argo Navis and weather station d. Focus motor software control with temperature compensation e. and most importantly, Eagle Manager that allows remote control of the entire system. The Eable Manager supports a web query so you can ask the Eagle to report all of it's sensor measurements. A custom wooden bracket mounts the eagle4S where the wheelbarrow handles normally attach on the side opposite the alt encoder mount and points the SQM in the direction of the telescope target. Argo Navis is tightly integrated with the ServoCat makes remote slewing possible after a 2 star alignment and setting the mode to "From Planetarium". When I slew to the next target (from my recliner) the ServoCAT servos can use up to 4 amps (I normally see only a couple amps going to the servos). At the end of the observation session, I copy all the new directories on the Eagle SSD drive to my NAS for post processing at a later date including the database updates that include all the "meta" data (about 50 fields) from the SQM, GPS, Argo Navis metrics, weather station parameters, battery monitor at the time of each image capture. Post processing will include importing all the harvested data into a database. Richard
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