Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

sgl_imaging_challenge_banner_30_second_exp_2_winners.thumb.jpg.b5430b40547c40d344fd4493776ab99f.jpg

Search the Community

Showing results for tags 'cpc800'.



More search options

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Content Type


Forums

  • Welcome
    • Welcome
  • Beginners
    • Getting Started General Help and Advice
    • Getting Started Equipment Help and Advice
    • Getting Started With Observing
    • Getting Started With Imaging
  • Community
    • Official SGL Announcements and Events
    • SGL Challenges and Competitions
    • SGL Star Parties
    • Star Parties & Astro Events
    • Celestial Events Heads Up
    • The Astro Lounge
  • Retailers
    • Sponsor Announcements and Offers
    • FLO Clearance Offers
    • IKI Observatory
    • Supplier Reviews
  • Astro Classifieds
    • For Sale / Swap
    • Wanted
  • Equipment
  • Observing
  • EEVA (Electronically Enhanced Visual Astronomy)
  • Imaging
  • Science
  • WADAS's WADAS Discussion Forum
  • Beaufort Club's Topics
  • Swindon Stargazers Club's Topics
  • East Midlands Stargazers''s Topics
  • Central Scotland Astro's Topics
  • SGL Cumbrian Skies's Topics
  • Herts, Beds and Bucks Group's Topics
  • SGL East Anglian Group's Topics
  • South Leicester Observers's Topics
  • South Wales Group's Topics
  • SGL Surrey Observers's Topics
  • South Yorkshire Stargazers's Topics
  • Yorkshire Astronomers's Topics
  • Devon and Cornwall's Topics
  • West Midlands's Topics
  • Essex Cloud Dodgers's Topics
  • Essex Cloud Dodgers's New equipment
  • NLO and Planetarium's Topics
  • Astronomical Society of Edinburgh's Discussion
  • Dorset Stargazers's Topics
  • Hairy Stars Club (Comets)'s Tutorials and Guides
  • Hairy Stars Club (Comets)'s General Discussion
  • Hairy Stars Club (Comets)'s Observing Campaigns
  • Hairy Stars Club (Comets)'s Analysis results
  • Hairy Stars Club (Comets)'s Useful Links
  • Pixinsight Users Club's Pixinsight Discussion Forum

Calendars

  • Astro TV
  • Celestial Events
  • SGL Calendar
  • Astro Society Events
  • Star Parties
  • WADAS's Events
  • Beaufort Club's Events
  • Astronomical Society of Edinburgh's Events
  • Dorset Stargazers's Events

Blogs

There are no results to display.

There are no results to display.


Find results in...

Find results that contain...


Date Created

  • Start

    End


Last Updated

  • Start

    End


Filter by number of...

Joined

  • Start

    End


Group


AIM


MSN


Website URL


ICQ


Yahoo


Jabber


Skype


Interests


Location

Found 19 results

  1. On 22 Oct I had a go at EEVA with the moons of Uranus, using my CPC800 and the ASI224MC (and flip mirror) The image with about 5 sec exposure looked exciting, with several little dots in a line around Uranus's overexposed blob. But when I analysed it later I found that I had imaged several 13th mag. background stars, and noted Oberon as a definite ID and Ariel as possible. The seeing was bad. The moons are clearly within the range of this setup, so I will try again sometime and see if I can secure a set of stackable images. The Sharpcap live stacking wouldn't work on this occasion. I needed Calsky to identify and eliminate the background stars, but it unhelpfully notes the moons as 'beyond the range of amateur telescopes.' The Sky & Telescope tool identified the moons.
  2. Saturn on 14 July. The main division is not as sharp as I would have liked, but the inner ring shows up very bright and one can see symmetrical shadows of the planet on the rings. Altitude about 14 deg. Imaged with CPC800, ASI224MC, ADC
  3. An EEVA-style image of Saturn's moons. 14 July, 22:07 UT, taken with CPC800, ASI224MC +ADC. Exposure 5 secs. The faintest moon visible is Encelasus, mag. 11.7 Next night I looked visually with an 8" SCT and could not make out any moons at all. Our Moon nearby was near full. Saturn is severely overexposed in order to get the moons.
  4. First good results with newly purchased ASI224MC camera. Using: CPC800, ASI224MC (USB3), ZWO IR cut filter, ZWO ADC. Conditions: planets low (15 deg or lower), near full moon, some haze. Time : around 04.40 BST. A few hours earlier I tried Mars but the results were poor asides for demonstrating the higher frame rate available with the new camera. In case you are wondering (as I was) what the difference is between an ASI224MC and an ASI120MC, the former does not appear to be any more sensitive so far as I could see (exposures no shorter) but the potential frame rate even with USB2 is higher. And the ASI224 has a deeper body for some reason. And this set of Saturn images is clearly my best ever.
  5. I have had an issue with the mount of my CPC800. I have noted that sometimes when slewing through a large angle in azimuth the note of the gear noise changes. Also once or twice the target image has taken off to the left while I was preparing to image and even motor speed 3 would not hold it on screen. Also I have once or twice left it unattended for several minutes and returned to discover that I needed to use the optical finder to recover the target. This makes me wonder if something is binding. It still works far better than the 6/8 SE mount, so I am reluctant to send it for repair or open it up without a clear pointer to the nature of the problem and likely fix. It would be a more serious issue for long exposures/deep space imaging.
  6. Finally got decent images of Jupiter with my CPC800. I was beginning to worry that I had invested in a setup that was inferior to my C8 SE.? The CPC800 mount is far nicer to use; it's much easier to get the image on chip and keep it there. And the GPS saves some time and effort. CPC800, ASI120MC, ZWO ADC, captured with Sharpcap, processed in Registax6. Note the Io moon & shadow, a circle near the middle of the southern cloud belt, and on the second image looks like the GRS just coming into view. Also got an image of Saturn - I have always found it hard to get a decent sharp image of Saturn (lower frame rate?)
  7. Getting close to ending the season for observing. Not a lot done this year as I'm still recovering from surgery and my 15 year old has been helping quite a bit. These are tow from yesterday. Sky was clear and reasonably good seeing. Jupiter was rushed before it dissappeared behind a tall hedge and Saturn is so low. Nevertheless, I think this are worth sharing here :-) CPC800 & QHY5L-II. >1500 frames each processed with PIPP, AS2! and PS5. Colour could be better but I find that improving colour sometimes leads to some detail being lost. Comments much welcome!!!
  8. Saturn is jumping from house roof to house roof these day in the UK latitudes. I managed to capture 5000 frames last night using the CPC800 w/wedge, QHY5L-II C; and processed these with PIPP (kept 25%), Autostakkert2! with Drizzle 30 and a little PS. Can I make it better? I think the C8 is delivering good here but could argue that better collimation would make it better. However, my star tests are 'good' at 200x. For the general UK conditions yesterday I think this is good? Tomorrow we have thunderstorms...so, everything will go back inside.
  9. Good afternoon all and hello from cloudy maidenhead! Recently getting back into astronomy from a few years break and have just bought a Celestron cpc 800 which i love! (i used to have a 8" Dob but it was too cumbersome to take to darker skies) Anyway as my title suggests i started\cleaning the front correction glass when i noticed the center with the collimating screws was able to rotate!? As i tried to tighten it, it kept on rotating (oh no!) This left me no choice but to remove the front glass to get inside to tighten it. I marked very carefully the exact orientation of the glass as ive heard this is matched to the main mirror and screws etc... When i removed the front end as feared the the secondary mirror was rotating also and i have no idea what position it started in! Will this just be a simple issue of re-collimating the scope or does the main and secondary mirrors need to be aligned some how? On a second note as i had the correction glass out i decided to clean both sides of it... I cleaned it very carefully and happy with the results but the glass didn't look coated in any way, just perfect clear glass. does this sound normal? Thanks for your help in advance guys Stu
  10. It's been hectic at work and I've not managed to get out to observe anything since the middle of last month. Yesterday was clear but work and the need for sleep kept me in. I went to work today and promised myself that if the weather was good I was going out tonight....I went running a bit after work, eat with my 14 year old, did a bit of homework and watched a little world cup with him. Looked out the bedroom window to check the sky and observed it's full moon today and she looks fantastic! Saturn is now due south and is not going higher than 33 degree above the horizon. Good from my garden location. So I opened by bike shelter (a poor mans obs) and checked all was fine with the CPC800. Turned it on, waited for the GPS, popped a 25mm XCEL, slewed close to mars and did a solar system align on it. Once this was completed I slewed immediately to Saturn. Got it centered in the field of view and popped a 12mm XCEL. What I saw was awesome: Rings, clear Cassini division, some surface detail! Wow! I've never had this good conditions for Saturn. Often, atmospheric turbulence would allow a clearer view and the detail and contrast would improve allowing more detail than I've ever seen using the C8 to get through. It was a fantastic session and I'm really glad I made myself that promise this morning. I even got my other half to come out for a peek and she stayed glued to the eyepiece for quite sometime! Very pleased.
  11. I recently acquired a used CPC800 SCT. I thought a 'First Light' report might be of interest. First impressions: the tripod is a heavy duty affair with thick legs, a folding lower spreader and a big cast alloy eyepiece tray/steady. The OTA/fork assembly (not separable) is very heavy (21Kg/44lbs) but has a couple of grab handles. You need to be fit to handle this. ? (I was seriously tempted not to go ahead with the purchase after trying the weight.) With the legs retracted it is just possible to pass the tripod through a standard doorway, but it is just as easy to pull up the lower spreader and carry it folded. It is much heavier than a C8SE tripod but more comparable with a EQ5 tripod in weight. Once in position, I checked the level with the handy built-in bubble level and left it. I forgot to screw up the eyepiece tray/upper spreader but I don't think this made any difference. Scope stored on a table with faceplate down and rear handle uppermost. Took the weight with my left arm, elbow fully bent, forearm vertical. Got it on the tripod which took the weight till I got the base to drop over the centre pin, spun it till something clicked into place and then did up the three thumbscrews. I would not try this with an equatorial wedge unless I had a helper. Celestron also sell a CPC 9.25 and CPC1100 - if I had one of those I'd need a sheerlegs or a brawny assistant.? Fitted the visual back (same as C8 SE), prism diagonal (same as C8 SE), straight-thru 50mm finder, handset (Nexstar+) and handset bracket which holds it facing rearwards (a handy feature not implemented on the C8 SE). Fitted a 25mm X-Cel LX that came as an extra. Connected my new lithium powertank and its DC cable, and powered up. It comes ready (CPC Ready) very quickly. Selected 2-star auto align - it whizzed past a time display showing the time ahead of my watch by 1 hour - more on this later. Aimed at Arcturus and afjusted the finder aim. Selected Capella - it nearly got there and then blackout! The cable had snagged and pulled on the plug. I ran the cable through the side handle on the fork and tried again. (It appears that the CPC's supplied cable has a locking ring and the other end has a cigarette lighter style plug.) Capella ... Arcturus .. aligned. Told it to find Mizar (named star menu). It did. Also found M48, the Ghost of Jupiter planetary, Gamma Leo (split ), 54 leo, 88 Leo, 90Leo. The scope appears to be collimated and resolution OK. GoTo is just accurate enough to drop doubles into the bottom of 9mm X-Cel Lx field. Even at 200x and a gusty night the view is rock steady. A pier mount could hardly be stiffer than this! And no obvious backlash in use (unlike C8 SE). Fiddled with the menu, found the GPS is obviously working, and the time set for daylight saving. Corrected it to standard time. GoTo still works. Teardown: tube horizontal, power off, tube cap on, diagonal off, handset and bracket off, left visual back on and capped it, loosened clutch to point tube straight down. Got OTA/fork assembly off and back indoors on table, twirled it into position. Folded up tripod and carried it indoors. I would not try carrying the tripod and scope together. Verdict: Very solid mount should be good for planetary imaging. Some nice features not on C8 SE, otherwise same optical performance. Alarming weight.
  12. Got images of Jupiter and Saturn in the morning and a tiny Mars in the evening. Saturn was very low and a fence may have blocked some light. Apparent diameter of Mars is now below 5" and the evening seeing was poor. Used: CPC800, ASI120MC, ADC, processed in Registax6.
  13. A stack of Jupiter GRS transit last night. The seeing was not great (lots of turbulence from my site) and this is as good as I managed to process a stack of 1000 frames with PIPP, A2S and PS. This is the second time I went out this year to do stuff with my scopes so I'm happy with the results. I tried to sharpen but that introduced a lot of ugly artifacts. The first time was to test the Starsense camera. I will report on that in a separate post.
  14. I've been working on this one for a while on and off. It's gone through various rounds of PIPP, stacking, drizzling and PS re-sampling. The colours are not right but this is the best resolution I've yet gotten from the C8 tube. And I'm a little impressed myself, so I thought I would share :-)
  15. Two shots of Jupiter and Mars from last night. The seeing was not the best but better than recent nights so I thought it was worth posting. In use: CPC800 & QHY5l-II. AVIs post-processed using PIPP, AS!2, Nikon CNX2. I'm still getting to grips with processing Mars...
  16. Here are my first shots with a DP Color from Astrophoto.co.uk CPC800. I have no relation whatsoever with Astrophoto and this is my first dip into astrovideography! Below are M13, M57 and a crop from Saturn on May 6th. Viewing was 6/10. It got damp quite quickly so the session was short (couple of hours). I got into bed before 1am. There is a haze of light on the top of the images. I'm trying to find out what is going on here. However, the colour in the images is quite good and the resolution, all taken into account, is great for a camera that costs less and £100. (All images have been processed using Registax6 -using defaults- and Nikon Capture NX2 (to correct and darken noisy background using black WB control point)).
  17. A stack of 1500 frames from 3x500 AVIs with EZPlanetary using a QHY5L-II C on a CPC800 on a wedge aligned using Starsense. My son (15) volunteered to stay out and help with focusing, keeping cables tidy, etc. Just because of him, one of the best nights ever - actually, this is the first proper observation night after big surgery (3 level ADSF) in December. Great to not do it alone! As Saturn is so low I was surprised we got this far on a 8" F/10. Processing: PIPP - AutoStacker2 - PS (to sort out colour balance and sharpen things).
  18. For Sale: Celestron CPC 800 GPS (XLT) Telescope Comes complete with all original Celestron accessories which includes: · Heavy duty tripod · Nexstar+ hand control · 9x50 finder scope · Visual back · 1.25 inch diagonal · 40mm eyepiece · Power cable · RS-232 cable (for handset) · Manuals In addition, the sale includes: · Bobs Knobs collimation knobs (already fitted) · Astrozap Flexible Dew Shield · Celestron power tank The scope is three years old and I am the original owner. I do not have the boxes so collection preferred. I am happy to deliver up to 100 miles range or can meet up on the M6 somewhere. NOW SOLD
  19. Monty

    Debris

    From the album: Monty's Place

    This is some of the debris from inside my Celestron CPC800 scope, also found on the inside of the corrector.
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.