2026/08/22 PM06:00
鞍部300DSO眼視素描與導航星圖 V3.4 (修正顯示範圍避免被手機狀態列遮蔽)
星座盤導航模式 新增 Align 指向修正功能，並可開啟相機
導航星圖可利用來指引裸眼觀星認，也可以利用來做架在手動經緯儀或其他架台上的望遠鏡的Push-to 導航瞄準器，只要將手機與望遠鏡架在同一個架台，手機相機的指向先與望遠鏡、尋星鏡視野校正平行度。(注意手機架必需使用非導磁性材質。)
APP主要功能：
*筆者於鞍部進行的300個深空天體眼視觀測素描的詳細參數記錄與素描（303個深空天體素描，星雲約80個，星系與星團約各110個。其中有一個天體的素描是彩蛋，是我家小兒子小時候跟我在鞍部一起觀星時畫的。）。
*內建對應天體的影像，多為各太空望遠鏡及大天文台的公開影像。
*星團的互動CMD 圖（H-R赫羅圖）-使用Gaia G20.5星等的資料clustered 本地CMD資料庫。
支援等時線、HB型態等控制與使用者目前觀測設備解析等顯示。
疏散星團使用平均Av去估算逐星消光進行修正。
球狀星團37個中僅有差異消光嚴重的NGC 6440使用整體及逐星消光值(HST觀測值，Cosmic-Lab ）兩種消光方式供參考。其他使用平均消光值統一校正（已足夠顯示用）。
*應用Blackwell 於1964年進行的人眼辨識對比閾值實驗結果(視大小與對比辨識門檻相關)，建立眼視觀測分析模型，在使用者視野功能頁面，會以使用者當下設備與觀測環境去做相關計算，即時提供目鏡視野內的延展天體（星系、星雲、球狀星團）可辨識度資訊與多種門檻分析曲線圖表。
*搜尋星圖功能能以「演算法自動生成」或由「使用者手動繪製」star hopping 跳星路徑，可用於跳星法手動尋星。註記功能可在路徑星圖上標註塗鴉，並作視野圈內幾何形態自動辨識。使用者可儲存以及匯出視野，儲存搜尋星圖到手機等行動設備相簿。
*星座盤功能標示鞍部300深空天體位置、指定彗星，支援顯示中文星座名以及知名星名、地景設定。
*星座盤可以切換實時Skycam模式或實時導航模式。
*導航模式具備align 與自動offset 功能，提高使用手機導航手動push-to瞄準天體的精度。
*星座盤Skycam 模式於小視野時可下載Gaia星表（至15等）於Aladin 各波段巡天影像。
*星座盤並提供行星觀測資訊（火星即時地貌位置、木星大紅斑位置以及伽利略衛星事件等）、ISS國際太空站觀測資訊。
*眼視觀測地圖是個書架，提供陽明山、鞍部的觀星環境介紹，以及筆者幾篇心得與研究。
（註）在彗星路徑功能頁內按下載更新會自動下載MPC所有彗星列表並建立近日點在未來兩年內的彗星星曆製作本地彗星星曆備份（第一次按下載更新會建立將近兩百顆彗星星曆，要好幾分鐘，請耐心等候。第二次以後只會比對新的二年列表作增減）。
安卓版本免費下載 (Andriod free download)
Anbu 300 DSO Visual Sketches & Navigation Star Charts V3.4 — Updated
The Constellation Chart Navigation Mode now includes an Align function for pointing correction, with support for opening the camera during navigation.
The Navigation Star Chart can be used as a guide for identifying stars and constellations with the naked eye. It can also serve as a Push-to navigation and aiming system for telescopes mounted on a manual alt-azimuth mount or other types of mounts.
Simply mount the smartphone and telescope on the same mount, then calibrate the smartphone camera so that its pointing direction is parallel to the telescope and finder scope fields of view.
Note: The smartphone holder must be made of non-magnetic material.
Main Features
• 300 DSO Visual Observation Sketches from Anbu
Detailed observation records and visual sketches of approximately 300 deep-sky objects observed by the author at Anbu, Yangmingshan.
The database currently contains 303 deep-sky object sketches, including approximately:
• 80 nebulae
• 110 galaxies
• 110 star clusters
One of the sketches is a little Easter egg—it was drawn by my younger son when he was a child and joined me for a night of stargazing at Anbu.
• Built-in Astronomical Images
Images corresponding to the observed objects are included in the app. Most are publicly available images obtained from major space telescopes and astronomical observatories.
• Interactive CMDs (H–R Diagrams) for Star Clusters
Interactive Color–Magnitude Diagrams (CMDs / H–R diagrams) are generated using a locally clustered database based on Gaia data down to G = 20.5 mag.
The CMD interface supports:
• Isochrones
• Horizontal Branch (HB) morphology controls
• Visualization based on the resolving capability of the user's current observing equipment
For open clusters, an average \(A_V\) value is used to estimate and correct the extinction of individual stars.
Among the 37 globular clusters, only NGC 6440, which suffers from severe differential extinction, provides two extinction-correction methods for comparison:
1. Global extinction correction
2. Star-by-star extinction correction using HST observational data from Cosmic-Lab
For the other globular clusters, a uniform correction using the mean extinction value is applied, which is sufficient for visualization purposes.
• Visual Detectability Analysis Based on the Blackwell Model
The app applies the results of Blackwell's 1964 experiments on human visual contrast thresholds, which describe the relationship between apparent angular size and the contrast threshold required for visual detection.
Based on these results, a visual observation analysis model has been developed.
On the User Field of View page, calculations are performed in real time according to the user's current observing equipment and observing conditions.
The app provides visual detectability information for extended objects within the eyepiece field of view, including:
• Galaxies
• Nebulae
• Globular clusters
It also displays several types of threshold-analysis curves and charts.
• Finder Chart & Star-Hopping Functions
The Finder Chart function can create star-hopping routes either:
• Automatically using an algorithm, or
• Manually by the user
These routes can be used for manually locating astronomical objects through star hopping.
The annotation function allows users to draw and make notes directly on the route charts. It also supports automatic recognition of geometric patterns within the field-of-view circle.
Users can save and export fields of view and save finder charts directly to the photo library of a smartphone or other mobile device.
• Constellation Chart
The Constellation Chart displays the positions of the Anbu 300 deep-sky objects and selected comets.
It also supports:
• Chinese constellation names
• Well-known star names
• Landscape/horizon settings
• Real-Time SkyCam and Navigation Modes
The Constellation Chart can be switched between:
• Real-Time SkyCam Mode
• Real-Time Navigation Mode
• Align and Automatic Offset Correction
Navigation Mode includes Align and automatic offset correction functions to improve the pointing accuracy of smartphone-assisted manual Push-to telescope navigation.
• Gaia and Aladin Survey Data
When using the Constellation Chart in SkyCam Mode with a small field of view, users can download Gaia star catalog data down to magnitude 15 and display it together with various survey images available through Aladin.
• Planetary and ISS Observing Information
The Constellation Chart also provides planetary observing information, including:
• Real-time surface feature positions on Mars
• The position of Jupiter's Great Red Spot
• Galilean satellite events
• International Space Station (ISS) observing information
• Visual Observation Map
The Visual Observation Map is presented in the form of a bookshelf.
It contains introductions to the stargazing environments of Yangmingshan and Anbu, along with several articles, observing notes, and research pieces written by the author.
Notes
• Comet Ephemeris Updates
On the Comet Path page, tapping Download / Update automatically downloads the complete comet list from the Minor Planet Center (MPC).
The app then generates ephemerides for comets whose perihelion passages occur within the next two years and creates a local backup of the comet ephemeris database.
The first update will generate ephemerides for nearly 200 comets, so the process may take several minutes. Please be patient.
For subsequent updates, the app compares the newly downloaded two-year comet list with the existing local database and only adds or removes entries as necessary.
• Language Support
The app currently supports Traditional Chinese only.
English language support is planned for a future release.
V3.2
這是一個主要的升級
1.增加CMD數據點繪製調整選項，現在可調整數據點粗度讓影像更細緻( V3.1 預設0.5 )，另可將顯示的色餘藍端延伸到-1。
2.改善CMD其他等時線的對齊邏輯，以及UI反應速度、CMD重繪邏輯的優化。
3. 球狀星團的等時線可在 alpha-enhanced 等時線（Alpha-enhanced Isochrones）與一般等時線（Solar-scaled Isochrones）之間切換（V3.1)。並在CMD指南中新增說明(V3.2)。
4.搜尋星圖自動搜尋跳星路徑的演算法新增一項“主星優先”，若前往路徑上有星座主星且偏離不會太遠，會優先選用星座主星當錨星。
5.搜尋星圖的註記功能新增自動尋找並繪製視野中的星星組成的幾何形態，方便跳星時參考。使用者可調整搜尋形態的參數。幾何形態與其他註記一樣可切換顯示與否。(V3.2優化權重調整介面)
6.優化搜尋星圖視野圈的星表載入與下載程序，以及Zoom與Pan動作時的畫布重繪程序，減輕計算負擔，解決動作延遲現象（V3.2）。
2026/07/19
V2.82
1.素描紀錄的搜尋星圖也增加了下載DSS影像按鈕，方便使用者比較眼視與攝影的差異。2.修正星座盤的視野方位指向變化精度。3.調整搜尋星圖匯出的標示。
