The five sets of three radio buttons, If set to the left, turn off filtering for that difference image. If set in the centre, apply filtering for that difference image. If set to the right, set that difference image to zero. The checkbox marked de-Panda prevents the sharpening process from placing black rings around stars and shock fronts. It is checked by default. Uncheck it can enhance some forms of dust detail, but will result in panda eyes around other features. To see a particular difference image: Click the button marked >> to set all difference images to zero. You will now see only the 16x16 filtered (Residual) image. Uncheck the Residual checkbox. You will now see a uniform featureless grey. Check the right-most of the three radio buttons only on the row whose difference image you wish to see. To see the 1x1 filtered image Click the right-most of three radio buttons on the 1x1 row. Click the left-most of three radio buttons on all subsequent rows. Check the Residual checkbox. To now see the 2x2 filtered image, then 4x4 filtered image, then 8x8, then 16x16: As above, but also check the right-most button on the subsequent rows, one by one until they are all checked. To custom adjust the noise in say the 2x2 difference image: Click the button marked >> to set all difference images to zero. Set the button for the 2x2 image to the middle position of three. This shows the filtered, sharpened (contrast enhanced) version of the 2x2 difference image. Check or uncheck the Residual checkbox as you see fit. Adjust the Filter Noise slider for the 2x2 difference image only. Background gradient removal The above image has a linear gradient in the background, from brighter at bottom left to darker at top right. Causes Horizontal, vertical, or diagonal background gradients can be due to: The moon Light pollution (eg distant cities, local lights) Airglow (which is brightest just above the horizon) A radial gradient is most likely due to inadequately done flats to correct for vignetting. Quite complex gradients can be due to inadequately done flats to correct for shadowing by off-axis guiders etc
The five sets of three radio buttons, If set to the left, turn off filtering for that difference image. If set in the centre, apply filtering for that difference image. If set to the right, set that difference image to zero. The checkbox marked de-Panda prevents the sharpening process from placing black rings around stars and shock fronts. It is checked by default. Uncheck it can enhance some forms of dust detail, but will result in panda eyes around other features. To see a particular difference image: Click the button marked >> to set all difference images to zero. You will now see only the 16x16 filtered (Residual) image. Uncheck the Residual checkbox. You will now see a uniform featureless grey. Check the right-most of the three radio buttons only on the row whose difference image you wish to see. To see the 1x1 filtered image Click the right-most of three radio buttons on the 1x1 row. Click the left-most of three radio buttons on all subsequent rows. Check the Residual checkbox. To now see the 2x2 filtered image, then 4x4 filtered image, then 8x8, then 16x16: As above, but also check the right-most button on the subsequent rows, one by one until they are all checked. To custom adjust the noise in say the 2x2 difference image: Click the button marked >> to set all difference images to zero. Set the button for the 2x2 image to the middle position of three. This shows the filtered, sharpened (contrast enhanced) version of the 2x2 difference image. Check or uncheck the Residual checkbox as you see fit. Adjust the Filter Noise slider for the 2x2 difference image only. Background gradient removal The above image has a linear gradient in the background, from brighter at bottom left to darker at top right. Causes Horizontal, vertical, or diagonal background gradients can be due to: The moon Light pollution (eg distant cities, local lights) Airglow (which is brightest just above the horizon) A radial gradient is most likely due to inadequately done flats to correct for vignetting. Quite complex gradients can be due to inadequately done flats to correct for shadowing by off-axis guiders etc
GoodLook%20Suite.docx