The Image Index is a system based on likes received on images, that incentivizes the most active and liked members of the community. Learn more.
The Contribution Index (beta) is system to reward informative, constructive, and valuable commentary on AstroBin. Learn more.
Description: The Luminance stack with its FWHMEccentricity stats. My eccentricity has been in the 0.6 region so a big improvement.
Uploaded: ...
Description: The associated maps which show the tilt of the whole image and the FWHM across the frame.
Uploaded: ...
Description: Vega RGB 15x30s each filter. 5th July 2018. Vega still not central in its halo, have since altered the primary. I still have this elongated flare around 7 o'clock, and there is tilt showing across both diagonals. Although my primary was still warm the focus tightened up considerably later in the night. It was 21 degrees at 11pm when these subs were taken.
Uploaded: ...
Description:
10th July 18.
Vega with Mire de collimation imposed over a single sub. Ugly flare has gone. Star is still elongated towards the left. Hopefully my next minor adjustment will solve this. I now know the spider vane towards the bottom is closest to the focuser.
Uploaded: ...
Description: The rgb stack with a slight stretch to make it non linear. Easier to see the error in this image.
Uploaded: ...
Description: 10th July 18. RGB 30sx15 each filter with the FWHMEccentricity maps. The FWHM map looks a lot better than the one from the 5th.
Uploaded: ...
Description:
Vega RGB extratcted Lum added 10th July 18.
Getting there.
Uploaded: ...
Description:
Three nights corrections. Earliest is on the left, tonight's on the right. All Vega.
The left image shows my usual pinch effect via the clear V shape around 7 o'clock. The middle shows how the star has moved with the correction shown in the amateur draughtsman's image to follow. The right image shows my latest correction tonight.
Uploaded: ...
Description: Forgive the drawing I'm no architect. With a collimation cap I found which spider vane is nearest my focuser, the bottom one and moved the vanes as the top right drawing. Which resulted in the middle image of Rev I: The top right amateur drawing. But it moved the star up and the pinch disappeared. You can see by the concentric circle its still off kilter. This is the image of Vega in Rev H:
Uploaded: ...
Description: After the previous correction of moving the star up in my spider, it looked a simple case of moving the other spider vane to centralise the star. Not so, however I corrected the caps the star would move around the central axis. It dawned on me the secondary needed to move. So I LOOSENED the screw whilst taking frame and focus images. Loosened as in my orientation and star error. If the error is opposite then tighten the central bolt or screw. This moved the star along the other axis i.e left to right, as in REV I: The right image is tonights collimation of that secondary position with camera attached. Still needs a small adjustment but it's getting there.
Uploaded: ...
Description: Last nights Vega 15thJuly18
Uploaded: ...
Description:
Knowing the camera chip is nearly squared to the rest of the optics with the camera and filter wheel in place, I made my final tweeks after this image. The star is slightly left and down from the center, So a tiny loosening of the secondary central screw to move the star right in the image and a tightening of the spider vane opposite the eyepiece ( slackening the Eyepiece vane), should do the trick and leave a perfect Vega at last.
Several accolades would follow along with Astro imager of the year ( in the cheap tackle category ) a shoe in.
Uploaded: ...
Description:
Adjustments made and Vega on the meridian the scope had flipped for this image.
Whoah!
Back to the drawing board. It's not a disaster but the tiny adjustment on the central screw was a tad too much. I've hopefully corrected that last night and have re-collimated to the new focuser tubes position. I will test again tonight.
Image M and N are from the 18thJuly18.
Uploaded: ...
Description:
Have corrected the error introduced the last image.
This is the blue white supergiant Deneb from the 25th July 18. The Eccentricity error for the image is 0.44, when I started this collimation process the error was 0.6 and change. A big improvement.
Uploaded: ...
UK Astro-Imaging |
This page or operation is not available at the moment, because AstroBin is in READ ONLY mode. For more information, please check out our Twitter feed: https://twitter.com/AstroBin_com
This feature is only offered at higher membership levels.
Would you be interested in upgrading? AstroBin is a very small business and your support would mean a lot!
This feature is only offered at the AstroBin Ultimate membership level.
Would you be interested in upgrading? AstroBin is a very small business and your support would mean a lot!
Only group members can post in a group's forum.
Please join or request to join the group, and then you'll be able to post a new topic.
If this user has been harassing you, and you shadow-ban them, all their activities on your content will be invisible to everyone except themselves.
They will not know that they have been shadow-banned, and the goal is that eventually they will get bored while having caused no harm, since nobody saw what they posted.
If they follow you, the follow will be removed, and they will not be able to follow you again.
This operation will reload the current page. If you have any unsaved information in a form, it will be lost.
You can also dismiss this window, and your operation will be applied at the next page navigation.
This operation cannot be undone!
When you report abuse on some content on AstroBin, the content will be hidden until a moderator reviews it. Abuse reports are anonymous and the content's owner will not be notified.
Please specify a reason for this abuse report.
Please note: The following tables are updated every 24 hours.
Distinct awarded users | Total awarded images | |
---|---|---|
Image of the day | ||
Top picks | ||
Top pick nominations |
Image of the day | Top pick | Top pick nominations | Total submitted | |
---|---|---|---|---|
Deep sky | ||||
Solar system | ||||
Extremely wide field | ||||
Star trails | ||||
Northern lights | ||||
Noctilucent clouds | ||||
Landscape |
Image of the day | Top pick | Top pick nominations | Total submitted | |
---|---|---|---|---|
Backyard | ||||
Traveller | ||||
Own remote observatory | ||||
Amateur hosting facility | ||||
Public amaeteur data | ||||
Professional, scientific grade data | ||||
Mix of multiple sources | ||||
Other | ||||
Unknown |
Please note: You are on a Free account, and when you delete an image, your upload counter does not decrease (unless the image is deleted within 24 hours of uploading it). The Free account is not a way to keep your most recent or best 10 images on AstroBin, but a trial period for you to decide whether or not a paid subscription is worth it. For more information, please click here.
The image will be permanently deleted and cannot be recovered. All its revisions will be deleted too. Are you sure?
You will delete all other revisions (if any), and the originally uploaded image, leaving the current revision as the final and only version of this image.
You will delete all revisions, leaving the originally uploaded image as the final and only version of this image.
The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.
Submitted The date and time when you submitted this image for IOTD/TP consideration. | ... |
---|---|
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew. | |
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected. | |
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status. | |
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members. |
This image cannot be submitted for the IOTD/TP consideration.
Reason:
You are not authenticated. Please log in.
Status | Advanced success |
Started | ... |
Astrometry.net job | 2168792 |
PixInsight job | YYHTQTHUZ6RUI07CYAE4UZSIDIYVIO71 |
PixInsight queue size | n/a |
PixInsight stage | n/a |
RA (center) | 20h41m23s.51 |
RA (top/left) | 20h42m47s.60 |
RA (top/right) | 20h42m02s.59 |
RA (bottom/right) | 20h39m59s.38 |
RA (bottom/left) | 20h40m44s.82 |
Dec (center) | +45°17′01″.1 |
Dec (top/left) | +45°05′26″.4 |
Dec (top/right) | +45°34′26″.6 |
Dec (bottom/right) | +45°28′31″.7 |
Dec (bottom/left) | +44°59′34″.5 |
Comments