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#1
February 4th 04, 11:33 PM
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Orion EQ-3M drves: single axis or double axis?
I know that with a good polar alignment I would only need a single
drive but, in real life experience, how much would I miss by buying only a single axis drive (EQ-3M) versus a double? Any suggestions? I have an EQ-3 mount with the dual drives. My experience is that the drives are not responsive, trying to guide things is quite frustrating because of the lag. If you are doing planets, i think the single axis drive would be more than adequate... Others may have other opinions.. jon 
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#2
February 4th 04, 11:55 PM
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Orion EQ-3M drves: single axis or double axis?
Jon Isaacs wrote: I know that with a good polar alignment I would only need a single drive but, in real life experience, how much would I miss by buying only a single axis drive (EQ-3M) versus a double? Any suggestions? I have an EQ-3 mount with the dual drives. My experience is that the drives are not responsive, trying to guide things is quite frustrating because of the lag. If you are doing planets, i think the single axis drive would be more than adequate... Others may have other opinions.. jon I also have the EQ-3 mount with dual drives and my opinion is the same as Jon's. I found the double drive useful for visual purposes, adjusting the things at high magnification without touching the mount. For this purpose the dual-drive is nice to have. For guiding, I think tha backlash is too-much (although it could be reduced somewhat by adjusting the drive on the mount). Regards, - Alex
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#3
February 4th 04, 11:55 PM
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Orion EQ-3M drves: single axis or double axis?
Jon Isaacs wrote: I know that with a good polar alignment I would only need a single drive but, in real life experience, how much would I miss by buying only a single axis drive (EQ-3M) versus a double? Any suggestions? I have an EQ-3 mount with the dual drives. My experience is that the drives are not responsive, trying to guide things is quite frustrating because of the lag. If you are doing planets, i think the single axis drive would be more than adequate... Others may have other opinions.. jon I also have the EQ-3 mount with dual drives and my opinion is the same as Jon's. I found the double drive useful for visual purposes, adjusting the things at high magnification without touching the mount. For this purpose the dual-drive is nice to have. For guiding, I think tha backlash is too-much (although it could be reduced somewhat by adjusting the drive on the mount). Regards, - Alex
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#4
February 4th 04, 11:55 PM
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Orion EQ-3M drves: single axis or double axis?
Jon Isaacs wrote: I know that with a good polar alignment I would only need a single drive but, in real life experience, how much would I miss by buying only a single axis drive (EQ-3M) versus a double? Any suggestions? I have an EQ-3 mount with the dual drives. My experience is that the drives are not responsive, trying to guide things is quite frustrating because of the lag. If you are doing planets, i think the single axis drive would be more than adequate... Others may have other opinions.. jon I also have the EQ-3 mount with dual drives and my opinion is the same as Jon's. I found the double drive useful for visual purposes, adjusting the things at high magnification without touching the mount. For this purpose the dual-drive is nice to have. For guiding, I think tha backlash is too-much (although it could be reduced somewhat by adjusting the drive on the mount). Regards, - Alex
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#5
February 5th 04, 01:34 PM
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Orion EQ-3M drves: single axis or double axis?
"Alexander Avtanski" wrote in message
... Jon Isaacs wrote: I know that with a good polar alignment I would only need a single drive but, in real life experience, how much would I miss by buying only a single axis drive (EQ-3M) versus a double? Any suggestions? I have an EQ-3 mount with the dual drives. My experience is that the drives are not responsive, trying to guide things is quite frustrating because of the lag. If you are doing planets, i think the single axis drive would be more than adequate... Others may have other opinions.. jon I also have the EQ-3 mount with dual drives and my opinion is the same as Jon's. I found the double drive useful for visual purposes, adjusting the things at high magnification without touching the mount. For this purpose the dual-drive is nice to have. For guiding, I think tha backlash is too-much (although it could be reduced somewhat by adjusting the drive on the mount). Regards, - Alex A related question: Orion says not to use the manual slow motions when the drive is attached. Rather, one should disengage the drives before using the manuals. Is there an easy way to do this -- it seems like a pain to carry those silly allen wrenches out into the dark each time I want to observe. Suggestions are welcome. -- Tom Royer Lead Engineer The MITRE Corporation 202 Burlington Road Bedford, MA 01730 Voice: (781) 271-8399 Cell: (978) 290-2086 FAX: (781) 271-8500 "If you're not free to fail, you're not free." -- Gene Burns
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#6
February 5th 04, 01:34 PM
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Orion EQ-3M drves: single axis or double axis?
"Alexander Avtanski" wrote in message
... Jon Isaacs wrote: I know that with a good polar alignment I would only need a single drive but, in real life experience, how much would I miss by buying only a single axis drive (EQ-3M) versus a double? Any suggestions? I have an EQ-3 mount with the dual drives. My experience is that the drives are not responsive, trying to guide things is quite frustrating because of the lag. If you are doing planets, i think the single axis drive would be more than adequate... Others may have other opinions.. jon I also have the EQ-3 mount with dual drives and my opinion is the same as Jon's. I found the double drive useful for visual purposes, adjusting the things at high magnification without touching the mount. For this purpose the dual-drive is nice to have. For guiding, I think tha backlash is too-much (although it could be reduced somewhat by adjusting the drive on the mount). Regards, - Alex A related question: Orion says not to use the manual slow motions when the drive is attached. Rather, one should disengage the drives before using the manuals. Is there an easy way to do this -- it seems like a pain to carry those silly allen wrenches out into the dark each time I want to observe. Suggestions are welcome. -- Tom Royer Lead Engineer The MITRE Corporation 202 Burlington Road Bedford, MA 01730 Voice: (781) 271-8399 Cell: (978) 290-2086 FAX: (781) 271-8500 "If you're not free to fail, you're not free." -- Gene Burns
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#7
February 5th 04, 01:34 PM
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Orion EQ-3M drves: single axis or double axis?
"Alexander Avtanski" wrote in message
... Jon Isaacs wrote: I know that with a good polar alignment I would only need a single drive but, in real life experience, how much would I miss by buying only a single axis drive (EQ-3M) versus a double? Any suggestions? I have an EQ-3 mount with the dual drives. My experience is that the drives are not responsive, trying to guide things is quite frustrating because of the lag. If you are doing planets, i think the single axis drive would be more than adequate... Others may have other opinions.. jon I also have the EQ-3 mount with dual drives and my opinion is the same as Jon's. I found the double drive useful for visual purposes, adjusting the things at high magnification without touching the mount. For this purpose the dual-drive is nice to have. For guiding, I think tha backlash is too-much (although it could be reduced somewhat by adjusting the drive on the mount). Regards, - Alex A related question: Orion says not to use the manual slow motions when the drive is attached. Rather, one should disengage the drives before using the manuals. Is there an easy way to do this -- it seems like a pain to carry those silly allen wrenches out into the dark each time I want to observe. Suggestions are welcome. -- Tom Royer Lead Engineer The MITRE Corporation 202 Burlington Road Bedford, MA 01730 Voice: (781) 271-8399 Cell: (978) 290-2086 FAX: (781) 271-8500 "If you're not free to fail, you're not free." -- Gene Burns
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#8
February 5th 04, 02:38 PM
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Orion EQ-3M drves: single axis or double axis?
A related question: Orion says not to use the manual slow motions
when the drive is attached. Rather, one should disengage the drives before using the manuals. Is there an easy way to do this -- it seems like a pain to carry those silly allen wrenches out into the dark each time I want to observe. There is no need to use allen wrenches to use the scope. To reposition of the scope to a new target, you first disengage the scope from the drives with the thumb levers just as you would do manually. Then tighten up the thumb levers and fine position the scope with the drives. One can also manually adjust the declination by disengaging the drive clutch. The RA drive has no clutch so you are stuck in this regard. Jon
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#9
February 5th 04, 02:38 PM
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Orion EQ-3M drves: single axis or double axis?
A related question: Orion says not to use the manual slow motions
when the drive is attached. Rather, one should disengage the drives before using the manuals. Is there an easy way to do this -- it seems like a pain to carry those silly allen wrenches out into the dark each time I want to observe. There is no need to use allen wrenches to use the scope. To reposition of the scope to a new target, you first disengage the scope from the drives with the thumb levers just as you would do manually. Then tighten up the thumb levers and fine position the scope with the drives. One can also manually adjust the declination by disengaging the drive clutch. The RA drive has no clutch so you are stuck in this regard. Jon
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#10
February 5th 04, 02:38 PM
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Orion EQ-3M drves: single axis or double axis?
A related question: Orion says not to use the manual slow motions
when the drive is attached. Rather, one should disengage the drives before using the manuals. Is there an easy way to do this -- it seems like a pain to carry those silly allen wrenches out into the dark each time I want to observe. There is no need to use allen wrenches to use the scope. To reposition of the scope to a new target, you first disengage the scope from the drives with the thumb levers just as you would do manually. Then tighten up the thumb levers and fine position the scope with the drives. One can also manually adjust the declination by disengaging the drive clutch. The RA drive has no clutch so you are stuck in this regard. Jon
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