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2020-04-06 06:09:05 *
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作者 主題: 信達的 azGTi MOUNT 開箱  (閱讀 2433 次)
peter
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« 回覆文章 #15 於: 2019-12-03 22:56:20 »

 AZ-GTi Alignment Instructions



https://www.cloudynights.com/topic/658474-skywatcher-synscanaz-gti-alignment-instructions/


 Posted 20 April 2019 - 01:15 AM

The following information is not official nor authoritarian, it is simply my conclusions from thoughtful testing and careful observation.  All described behaviors are based upon insight and conclusion, not upon actual knowledge of the Synscan code.  In other words, my best guess cool.gif

 

Synscan Pro for iOS, ver 1.16.1 seems to have an incomplete Reset Alignment bug whereby the current sky model is not removed from memory.  I have reported this bug to Skywatcher.  Hopefully they will investigate and resolve.

 

Synscan Pro for Windows PC, ver 1.16.0 is correctly removing the sky model from memory when you Reset Alignment.

 

Power on Mount
Axis will be reset to the default position.

 

Synscan Connect
AZ Mode:  The Axis default position will be (0, 0)
EQ Mode:  The Axis default position will be (-90, 90)
Az/Alt will be set to the Axis plus offset of the current sky model.  The offset will be (0, 0) if no sky model exists resulting in an Az/Alt of (0,0) for AZ Mode, or (0, Your Latitude) for EQ Mode.

For Synscan Pro for iOS ver 1.16.1
Synscan will remember the previous sky model and offsets, unless you do the following, in order:
    1. Reset Alignment
    2. Remove Synscan from device memory
If a sky model is present, stars will be listed in Align with Sync

Reset Alignment will sync Az/Alt to Axis in AZ Mode, and Az/Alt to Axis plus Your Latitude in EQ Mode.

Reset Alignment ALONE, DOES NOT remove the sky model, you must also close Synscan, remove it from device memory, and re-launch. (No need to power off/on the mount, or disconnect wireless)(This is an APP ONLY operation to remove the sky model from memory).  Close and re-open is not enough, you must remove the app from background memory.

 

Best Practice:
Always remove the Synscan APP from device memory after Reset Alignment, and then re-open and re-Connect the APP to the mount.

 

Synscan Pro for Windows PC ver 1.16.0 will still retain a sky model if exited and re-launched, as it should. It also correctly removes the sky model when you Reset Alignment.

 

Alignments
Any type of Alignment will add to an existing sky model, or create one if one does not already exist.
Confirming center of any object will add error correction offsets to the current sky model.  These offsets will correct for slight in-accuracies in geographical location/time and mount leveling.  They won’t compensate for any variations in the gravitational constant in your backyard.    The point here is, that the sky model/error offsets can get wonky if your adding new data to an old existing sky model.

 

1-Star Alignment
The mount will slew to the selected star coordinates from current Synscan Az/Alt.  The accuracy is entirely dependent upon the current Synscan Az/Alt being real-world-correct and the accuracy of the mounts level.
Confirming center will sync the Az/Alt to the star coordinates, add the star to Align with Sync, and create the sky model.  The accuracy of the sky model will be based on just the offsets created by the centering action of one star.

 

 

Brightest Star Alignment
Manually center the 1st star. The mount will NOT MOVE to the 1st star, you are expected to slew or move the mount to the 1st star yourself.  This requires you to be able to look up and identify the 1st star yourself.
Confirming center will sync the Az/Alt to the 1st star coordinates.
The mount will then slew to the 2nd star coordinates from the current Az/Alt.  Accuracy will be dependent upon the mounts level and how accurate you centered the 1st star.
Confirming center will sync Az/Alt to the 2nd star coordinates, add the stars to Align with Sync, and create the sky model.  The accuracy of the sky model will be based on the offsets created by the centering action of the two stars, and the error calculated between the 2 stars (linear).  The offsets compensate for level inaccuracies, and will be applied to subsequent Gotos.

 

North-Level Alignment (AZ Mode Only)
This alignment is similar to a Brightest Star Alignment, except you don’t need to be able to identify stars, you just need to know which way is North.
Set the scope/mount pointing north and level.  Bubble level and smart phone compass, and even best eyeball guess is accurate enough in most cases.
Confirming north and level will sync Az/Alt to 0, 0.
The mount will then slew to the 1st star coordinates from the current Az/Alt.  Accuracy will be dependent upon the accuracy of the north and level placement.
Confirming center will sync Az/Alt to the 1st star coordinates.
The mount will then slew to the 2nd star coordinates from the current Az/Alt.  Accuracy will be dependent upon the mounts level and how accurate you centered the 1st star.
Confirming center will sync Az/Alt to the 2nd star coordinates, add the stars to Align with Sync, and create the sky model.  The accuracy of the sky model will be based on the offsets created by the centering action of the two stars, and the error calculated between the 2 stars (linear).  The offsets compensate for level inaccuracies, and will be applied to subsequent Gotos.

 

2-Star Alignment (EQ Mode Only)
The mount will slew to the 1st star coordinates from the current Synscan Az/Alt.  The accuracy is entirely dependent upon the current Synscan Az/Alt being real-world-correct and the accuracy of the mounts level.
Confirming center will sync Az/Alt to the 1st star coordinates.
The mount will then slew to the 2nd star coordinates from the current Az/Alt.  Accuracy will be dependent upon the mounts level and how accurate you centered the 1st star
Confirming center will sync Az/Alt to the 2nd star coordinates, add the stars to Align with Sync, and create the sky model.  The accuracy of the sky model will be based on the offsets created by the centering action of the two stars, and the error calculated between the 2 stars (linear).  The offsets compensate for level inaccuracies, and will be applied to subsequent Gotos.

 

3-Star Alignment
This is the most accurate alignment because error offsets can be triangulated instead of calculated linearly.
The mount will slew to the 1st star coordinates from the current Synscan Az/Alt.  The accuracy is entirely dependent upon the current Synscan Az/Alt being real-world-correct and the accuracy of the mounts level.
Confirming center will sync Az/Alt to the 1st star coordinates.
The mount will then slew to the 2nd star coordinates from the current Az/Alt.  Accuracy will be dependent upon the mounts level and how accurate you centered the 1st star
Confirming center will sync Az/Alt to the 2nd star coordinates.
The mount will then slew to the 3rd star coordinates from the current Az/Alt.  Accuracy will be dependent upon the mounts level and how accurate you centered the 2nd star.
Confirming center will sync Az/Alt to the 3rd star coordinates, add the stars to Align with Sync, and create the sky model.  The accuracy of the sky model will be based on the offsets created by the centering action of the three stars, and the error calculated between the 3 stars (triangular).  The offsets compensate for level inaccuracies and will be applied to subsequent Gotos.

 

Polar Alignment (EQ Mode Only)
Polar alignment in Synscan requires that you first perform a Bright, 2, or 3 star alignment.  I recommend 3 star for greatest accuracy.
The mount will slew to the chosen star for Polar Alignment.
Confirming center will sync Az/Alt and use the offsets plus current sky model to calculate latitude and altitude base adjustments.  Synscan will move the mount accordingly and ask you to center the star using the base latitude adjustment.  Center the star as close as you can using just the one base adjustment.  Synscan will move again and ask you to center the star using the base altitude adjustment.  Center the star as close as you can using just the one base adjustment.
Since you have “pulled the rug out from under” the current sky model by adjusting the base, you will need to Reset Alignment, and perform a new Star Alignment.

 

Synscan Pro for iOS ver 1.16.1 will require that you remove Synscan from memory after Reset Alignment, re-launch Synscan, re-connect in EQ Mode, and perform the Star Alignment of your choice.

 

The accuracy of the Polar Alignment will generally be good enough for visual, un-guided short exposure imaging, and long exposure guiding.  You can perform another iteration of PA/SA to achieve greater accuracy.

 

Tracking
In EQ Mode, tracking is easily accomplished by setting the RA(Azimuth) gear rate of rotation to sidereal.  This rate is constant.  Accuracy is primarily dependent upon the precision of gear and motor manufacturing.
In AZ Mode, the mount will use the current date/time/location and the object coordinates to calculate the proper gear rate of rotation for both axis.  These rates are variable depending on the position in the sky of the object.  Eastern objects move up faster than they move right, Southern objects move right faster than they move up or down, Western objects move down faster than they move right.  Northern objects don’t go to market, stay home, or go wee wee wee.  If you’re in the Southern Hemisphere than Northern objects do, in fact, go wee wee wee.

 

 

Point-and-Track (AZ Mode Only)
Tracking does not require an alignment or a sky model.  Select the object from the appropriate list and choose Point-and-Track.
(For EQ Mode, just point the scope at the object and select the appropriate tracking rate from the tracking menu in the upper right corner of Synscan)

 

 

Point-and-Go
Synscan will use your mobile device’s accelerometer to slew the mount to the general area of the sky your device is pointing at.  You can then further refine the position by selecting an object from a nearby object list.  Point your device and press Point-and-Go from the Utility Menu.  You do not need to continue pointing while the mount slews.

 

Although I hope you find this information clear, concise, and useful, I hope even more that we all experience more Clear Skies!


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peter
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« 回覆文章 #16 於: 2019-12-04 13:02:52 »

FB 

曹兆年

https://www.facebook.com/photo.php?fbid=2840488525969407&set=a.233743483310604&type=3&theater



Canon EOS M3
Sigma 30mm f1.4 (使用f2.Cool
SkyWatcher AZ-GTI mount
120sX95張

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« 回覆文章 #17 於: 2019-12-04 15:59:18 »

https://forum.hkas.org.hk/thread-10467-1-1.html

手提電話或者平板電腦的 Wifi 連線設定

自動加入 = on

IPV4 地址
設定IP = 自動
IP 地址 = 192.168.4.2
子網絡遮罩 = 255.255.255.0
路由器 = 192.168.4.1
設定 DNS = 自動

IP address for AZ-GTi  : 192.168.4.2
Port number : 11882
iOS 要用兩台設備才可以連接 AZ-GTi 和 SkySafari
先用 iPhone 或者 iPad 連接和啟動 SynScan,要保持開連接狀態。
再用另一部開啟 SkySafari,在 Scope 功能,connect 後便可以使用

Android 可以使用同一台設備先連接 AZ-GTi,然後連接 SkySafari


===
AZ-GTi 經緯儀做 star alignment  的小技巧

要經緯儀能夠準確尋找及追蹤星體需要一些輔助的小工具

包括包括:
1. 平水尺
2. 水平調節底座
3. 磁力計
4. 指南針

AZ-GTi 經緯儀 (晚上可以看到北極星) 對準步驟

1. 打開三腳架
2. 安裝水平調節底座
3. 用平水尺協助,調整好水平調節底座,令底座處於水平狀態
4. 安裝 AZ-GTi 經緯儀
5. 不要開啟 AZ-GTi 經緯儀
6. 鬆開 AZ-GTi 經緯儀底座鎖緊用的鑼絲
7. 將望遠鏡安裝位置轉至觀測者右側
8. 安裝望遠鏡或相機
9. 將望遠鏡或相機指向北極星,直至北極星位於目鏡視場的中心
10. 用平水尺輔助將望鏡或相機放置在水平位置
11. 鎖緊 AZ-GTi 經緯儀的兩顆鑼絲
12. 啟動 AZ-GTi 經緯儀
13. 打開手機,將網絡連接到 AZ-GTi 網絡
14. 打開 SyscanPro 應用程序
15. 將 AZ-GTi 經緯儀連接到 Alt-Az 模式
16. 選擇調準 (Alignment) 方法
17. 選擇北極 - 水平調準 (North-Level Alignment)
18. 按照指示,使用亮星對齊校準,如果目標星星不是在目鏡視場的中央,用上、下、左、右鍵將目標星星移動至視場中心
19. 然後按順序選擇北極星作為下一個目標,重複上述第18 步驟
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« 回覆文章 #18 於: 2019-12-04 16:00:42 »

AZ-GTi 赤道儀模式
https://forum.hkas.org.hk/thread-10467-2-1.html
緯度調節器連極軸望遠鏡(注意:這個設計會阻礙望遠鏡在某些位置不能移動,使用前必須留意)



按照生產商的安裝方法,只能在緯度40度或者更高以上使用,是不適合香港的緯度使用。使用者需要倒轉安裝才可以在低至緯度21度使用。

使用 QHY Pole Master 電子極軸鏡頭只能當作不能跟隨赤經軸旋轉的極軸望遠鏡。不能使用 Pole Master 的軟件的調節功能。
使用 Pole Master 電子極軸鏡頭或者極軸望遠鏡對極之後,要拆除才可以避免望遠鏡在赤道儀模式運行時不會碰撞到
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« 回覆文章 #19 於: 2019-12-04 16:08:23 »

感謝曹兄  ..原來他也碰過跑錯方向 



後來每次開機(或回到零位)就會執行一次復位,
然後再打開輔助編碼器(不打開也可以)
甚至每次回到“零位”,我就會執行一次“復位”讓赤道儀知道已經到“”初始位置了”


* 79387371_2488327008107799_2287487616070713344_n.jpg (24.89 KB, 405x840 - 已被閱讀 220 次.)

* 79001969_752077381870687_7410677632129302528_n.jpg (15.9 KB, 405x840 - 已被閱讀 222 次.)
« 最後編輯時間: 2019-12-06 09:09:16 由 peter » 已記錄

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« 回覆文章 #20 於: 2019-12-06 09:08:29 »

AGTi update AZ to EQ

https://www.youtube.com/watch?v=bLdkgLIGDfc


https://www.youtube.com/watch?v=rFx5ANFhzSo



* 177.jpg (278.67 KB, 890x603 - 已被閱讀 220 次.)
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« 回覆文章 #21 於: 2019-12-17 18:51:19 »

https://www.cloudynights.com/topic/645335-using-the-skywatcher-azgti-with-a-windows-pc-asiair-and-stellarmate-review-and-opinion/



信达赤道仪如何连接ASIAIR实现精准goto

http://zwoasi.com/photography-guidance/2876.html

ZEQ5, AZEQ6, AZ-GTI等,属于赤道/经纬混合式。所谓赤道/经纬混合式,就是可以通过设置模式来切换赤道仪模式和经纬仪模式。

ASIAIR可以支持这两种赤道仪,AZEQ类型的赤道仪需要在赤道式模式下才能与ASIAIR通信。

先通过SynScanAPP配置好WiFi,station模式下连接ASIAIR的热点,设置静态IP地址10.0.0.11。采用EQMOD协议通过端口11880 UDP方式连接。具体方法请参考另一篇文章:ASIAIR与信达AZ-GTI经纬仪搭配使用指南。
 ==>  http://zwoasi.com/photography-guidance/asiair%e4%b8%8e%e4%bf%a1%e8%be%beaz-gti%e7%bb%8f%e7%ba%ac%e4%bb%aa%e6%90%ad%e9%85%8d%e4%bd%bf%e7%94%a8%e6%8c%87%e5%8d%97.html

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« 回覆文章 #22 於: 2020-02-06 17:01:38 »

HK 同好

https://www.facebook.com/dicre123?__tn__=%2CdC-R-R&eid=ARDiDt37UpJylUw3657gBgJS39KzejqfQb3Hi31feB-i3ssVjWnYXrMBEuADRVh2npBB4TitXXk7LW8-&hc_ref=ARTmeEX8uiFX5BDgILSkzSoEqfcXEyJMdPMd4asMRtInx0LLDMx_rly47_n9zUSJQ1I&fref=nf
 
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« 回覆文章 #23 於: 2020-02-18 09:23:56 »

cloudynights 討論
有人架如此重  ..


https://www.cloudynights.com/topic/586532-new-skywatcher-az-gti-goto-wifi-mount/page-76


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