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General Photography
Low Light & Night
Another Astrophoto...M33 Triangulum Galaxy
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<blockquote data-quote="Dxer" data-source="post: 594093" data-attributes="member: 38328"><p>My current setup looks like this</p><p></p><p>[ATTACH]236942[/ATTACH]</p><p></p><p>This is more or less an entry level setup. I have a Celestron Advanced VX mount with a 6" Newtonian type telescope. </p><p></p><p>The mount itself is the most important part of the rig. This is needed to find and track the objects in the sky. The tripod will rival most if not all high end tripods for photography use. The tripod is made of 2" stainless steel legs. Incredibly sturdy. Not exactly something you would want to carry around though. lol</p><p></p><p>The mount is computer controlled via the handset you see in the picture. Through the handset is where you tell your mount where you are and inputting time and date. Also this where you do your star alignments. When everything is completed, you just tell the mount what object you want to see and it will point to that object and track it.</p><p></p><p>The big tube is the main telescope and what I use for imaging with. It is a simple Newtonian. No lenses or any kind of glass is used the optical train. Light goes through the opening and reflects of a mirror at the other end of the tube. Bounces the light to a secondary mirror which then reflects the light into the focuser. This is where my Nikon camera gets attached. </p><p></p><p>The smaller telescope on top is part of my autoguider. Unless you are a perfect human being, this is unnecessary. But nobody is perfect. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> Meaning when you do your initial setup, it requires a polar alignment. This being a german equitorial mount, this is key to making this type of mount to work properly. So when properly polar aligned, the mount only moves on a single axis versus two axis on an altaz type of mount commonly used in photography. Even with a decent polar alignment, most mounts will have tracking errors. So the second telescope is smaller and has a small camera attached to it. One cable goes to the computer and the other gets plugged into the mount. So you point your telescope at an object in the sky. The small telescope and camera gets aligned to a star in the field of view. Then with a program that I run on the laptop, it can more accurately fix the minor tracking errors leaving no star trails. Keeping the image nice and sharp with no apparent movements even though the telescope is moving the entire time keeping up with the earth rotation. This allows for extremely long exposures. Without which, your exposure times will be significantly reduced. With tracking AltAz mounts, even good ones, your exposures will be limited to about 30 seconds. With a EQ mount like this and with a decent polar alignment, I have been able to increase exposure times to about 2 minutes. With the autoguider, sky is the limit depending on how well the polar alignment is. </p><p></p><p>I hope some of this makes sense. I am a beginner to say the least at this but I am having fun with it. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="Dxer, post: 594093, member: 38328"] My current setup looks like this [ATTACH=CONFIG]236942._xfImport[/ATTACH] This is more or less an entry level setup. I have a Celestron Advanced VX mount with a 6" Newtonian type telescope. The mount itself is the most important part of the rig. This is needed to find and track the objects in the sky. The tripod will rival most if not all high end tripods for photography use. The tripod is made of 2" stainless steel legs. Incredibly sturdy. Not exactly something you would want to carry around though. lol The mount is computer controlled via the handset you see in the picture. Through the handset is where you tell your mount where you are and inputting time and date. Also this where you do your star alignments. When everything is completed, you just tell the mount what object you want to see and it will point to that object and track it. The big tube is the main telescope and what I use for imaging with. It is a simple Newtonian. No lenses or any kind of glass is used the optical train. Light goes through the opening and reflects of a mirror at the other end of the tube. Bounces the light to a secondary mirror which then reflects the light into the focuser. This is where my Nikon camera gets attached. The smaller telescope on top is part of my autoguider. Unless you are a perfect human being, this is unnecessary. But nobody is perfect. :) Meaning when you do your initial setup, it requires a polar alignment. This being a german equitorial mount, this is key to making this type of mount to work properly. So when properly polar aligned, the mount only moves on a single axis versus two axis on an altaz type of mount commonly used in photography. Even with a decent polar alignment, most mounts will have tracking errors. So the second telescope is smaller and has a small camera attached to it. One cable goes to the computer and the other gets plugged into the mount. So you point your telescope at an object in the sky. The small telescope and camera gets aligned to a star in the field of view. Then with a program that I run on the laptop, it can more accurately fix the minor tracking errors leaving no star trails. Keeping the image nice and sharp with no apparent movements even though the telescope is moving the entire time keeping up with the earth rotation. This allows for extremely long exposures. Without which, your exposure times will be significantly reduced. With tracking AltAz mounts, even good ones, your exposures will be limited to about 30 seconds. With a EQ mount like this and with a decent polar alignment, I have been able to increase exposure times to about 2 minutes. With the autoguider, sky is the limit depending on how well the polar alignment is. I hope some of this makes sense. I am a beginner to say the least at this but I am having fun with it. :) [/QUOTE]
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Another Astrophoto...M33 Triangulum Galaxy
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