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Amajed

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About Amajed

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    Nebula

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    Saud Arabia
  1. Now that you've mentioned it, I did purchase these couple months ago, gonna have to search for them. Thanks
  2. it is the same amount of light, but you can get shorter exposures, meaning more subs, that gives a better image. right? it's F10 vs F7, right? and another thing, without the Reducer, I can't fit, let say M101 and one more thing, guiding get's easier (2032mm vs 1422mm) I think the Reducer makes a lot of things better. right?
  3. I think so, but that will require me to use a nose piece, which I don't want to, I like to screw things together for a tight and snug setup. But wait, I think I got it all wrong about the Celestron OAG, I think I do not require the T Adapter if I'm using it. it does have a "SCT Adapter" isn't that the T Adapter's job? so I don't need the T Adapter anymore, it's like this: Reducer > SCT Adapter 25.3mm (came with OAG) > OAG 29mm > M48 Camera Adapter 4.5mm > T2 Adapter for Filter wheel 2mm > Filter Wheel 20mm > CCD 6.5mm I'll need spacers about 18.7mm (I need to figure out how to reach this number :D) other than that, it should work!
  4. it does, the 50mm is only one part, I think the two parts are almost 76mm or something.
  5. with the reducer, its 106mm for backfocus. the T Adapter (with the orange ring) is 50mm, after that I followed this diagram to get to a perfect backfocus: the issue with Celestron OAG (from looking into the PDF file) it says that the OAG body alone is 29mm, and the SCT Adapter is 25.3mm. so the OAG setup alone is 54.3mm plus T adapter. that is 104.3mm. now I need to figure out how to attach the filter wheel (20mm) and the ccd (6.5). I don't think I have much to work with here :D? BUT! I do have a SCT to M48 thin adapter (I can ditch the T Adapter) and that will give me a lot of space to work with.... right? I'm gonna have to calculate that... but it might work.
  6. I see, yeah I had to make the prism almost hit the edge of the imaging sensor for me to be able to get a good view for my guiding cam. when I said fine, I meant it was tracking, but sometimes I had to move the telescope around to get a good star. which was annoying. looking at the Celestron OAG, its huge, I don't think I can use it with the Reducer, I'll be way past the 106mm required space. so it's ether the ZWO OAG or a Conventional tube rings.. right?
  7. Hi alacant, I don't understand why if I use a OAG I'll have to lose the reducer? what do you mean by not enough FOV? I used ZWO OAG before with this setup, but decide to use my old 80mm because it will be easier for me to find a suitable star. but for guiding, Reducer + ZWO OAG was working just fine (I think). if you think I should go back to the ZWO OAG (or even get the Celestron OAG) I will if it will help with my problem. Thanks
  8. Thanks fwm891. these pictrures are from last night. let me know if you need more picture.
  9. I'm not sure for how long, but it's pretty long, maybe two hours (also temp is not cold around here, so there's not so much to cool down).
  10. Thanks Billy, why would my tracking be bad when I'm using PoleMaster + my guiding RMS is bellow 0.5px (imaging scale is 0.52px). are there other numbers I should be looking at to know if i'm tracking poorly? for focusing, I'll try to focus on a smaller star next time to make sure I reach the perfect X shape. Thanks
  11. Hi, last night I imaged for the first time using my new EdgeHD 8" but the results wasn't pleasing. my gear: Sky Watcher EQ6-R + QHY PoleMaster EdgeHD 8" + Celestron FR 0.7x ZWO ASI1600MM Cool Pro ZWO EFW + ZWO LRGB 36mm unmounted filters ZWO ASI290MM + 80mm Guide Scope Bahtinov Mask (I used Sirius star for focusing, I think now it's a bad choice considering it's apparent size) My back focus was 106mm from the reducer to the sensor. ( the extra 1mm was recommended by ZWO when using filters) everything is screw in type, so everything is tight together. my guide RMS between 0.4px and 0.5px. the next image was shot using the following settings: 120sec exp 1x1 binning (I think I should've used 2x2) Lum Filter Unity Gain 139 https://i.imgur.com/Qe8Lvrh.jpg the picture looks like a bit out of focus, but the shape of the stars is weird, is that how it supposed to look like if I'm out of focus? I suspected that I need to collimate my SCT, but when I tested it using an artificial star it was a perfect Donut. so it shouldn't be that. what do you think?
  12. I solved the problem, it was my portable battery, I tried another one and the problem got fixed Thanks
  13. Sorry I just noticed that the link for the logs isn't working. so I fixed it. yes I did post it in Google Group, if they came up with a solution I'll post it here for sure for now I'm doing a fresh windows install, I'll install the minimal software I can. will see how it goes. Thanks almcl
  14. Thanks almcl. I don't have another cable right now. And ordering a new one will take more than 5 days. I want to make sure it's not a software issue first if possible. I didn't run a new equipment profile. Since it's the same guide cam I've been using before. I just adjusted the focal length. I think the calibration said that the RA wasn't good for some reason and it asjed me if I want to accept it or not. And I accepted it. I did use the guide assistant and it failed at some point. It tried to correct for backlash. I posted my guide logs in my original post "as a link" . Thanks.
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