# Yoshiharu Tsuruhama

> Japanese amateur astronomer

**Wikidata**: [Q116103712](https://www.wikidata.org/wiki/Q116103712)  
**Source**: https://4ort.xyz/entity/yoshiharu-tsuruhama

## Summary
Yoshiharu Tsuruhama is a Japanese amateur astronomer, programmer, and writer. Born on February 5, 1967, he is affiliated with the University of Osaka and is known in the astronomical community by his nickname "Tsuruchan" (つるちゃん). He manages his online presence and FAQ through his personal website, turupura.com.

## Biography
- **Born:** February 5, 1967
- **Nationality:** Japan
- **Education:** University of Osaka
- **Known for:** Contributions to amateur astronomy and software development
- **Field(s):** Astronomy, Software Engineering, Writing
- **Languages:** Japanese

## Contributions
Yoshiharu Tsuruhama operates at the intersection of computer science and amateur astronomy. As a programmer and software engineer, he utilizes his technical skills to support astronomical activities, though specific software titles are not detailed in the provided data beyond his general classification as a software developer. He maintains a significant digital footprint through his website, "turupura.com," which serves as a hub for his work and features a dedicated FAQ section for visitors.

As a writer, Tsuruhama has a documented presence in the publishing world, evidenced by his Amazon Author ID (B004LUCTD6) and multiple library authority records, including the National Diet Library (NDL) and CiNii. His identity as a "writer" suggests he has produced written content related to his fields of expertise. He is credited with a notable work identified in knowledge bases (Wikidata Q118129507), further cementing his role as a content creator in the scientific community. His affiliation with the University of Osaka highlights his connection to formal academic and research environments in Japan.

## FAQs

### Q: What is Yoshiharu Tsuruhama's nickname?
A: His nickname is "Tsuruchan" (written in Japanese as つるちゃん), which is used as an alias alongside his real name.

### Q: Is Yoshiharu Tsuruhama a professional astronomer?
A: No, he is explicitly described as a Japanese amateur astronomer, though he is also a professional software engineer and programmer.

### Q: Where can I find Yoshiharu Tsuruhama's work online?
A: His primary website is located at https://turupura.com/index.html, which also hosts his site map and FAQ menu in Japanese.

## Why They Matter
Yoshiharu Tsuruhama represents a vital link between the technical discipline of software engineering and the observational passion of amateur astronomy. While often distinct fields, the modern amateur astronomer frequently relies on custom software for data analysis, telescope control, and imaging. Tsuruhama’s dual proficiency allows him to bridge this gap effectively.

His recognition by major bibliographic and academic entities—including the National Diet Library (Japan), CiNii Research, and NACSIS CAT—demonstrates that his contributions extend beyond casual hobbyism into documented, cataloged research or writing. This formal recognition suggests that his output, whether literary or software-based, holds value for the broader academic and enthusiast communities in Japan. By maintaining a dedicated web portal and possessing verified authority control IDs, he ensures that his specific knowledge base remains accessible and attributed.

## Notable For
- **Dual Expertise:** Being recognized simultaneously as an amateur astronomer and a software engineer/programmer.
- **Academic Affiliation:** Connection to the University of Osaka, a major higher education institution in Japan.
- **Published Author:** Possessing an Amazon Author ID and cataloged entries in the National Diet Library.
- **Digital Presence:** Operating the "turupura.com" domain, which serves as his primary information hub.
- **Recognized Identity:** Holding multiple unique identifiers across Google Knowledge Graph, VIAF, and Wikidata.

## Body

### Background and Education
Yoshiharu Tsuruhama was born on February 5, 1967, in Japan. He is a male Japanese citizen who pursued higher education at the University of Osaka (Osaka Prefecture, Japan). His academic environment likely fostered the development of his skills in both the sciences and computing.

### Professional Identity and Skills
Tsuruhama defines his occupation through a combination of technical and scientific roles:
*   **Programmer / Software Engineer:** He is identified as a practitioner of software engineering and a subclass of software developer.
*   **Amateur Astronomer:** He actively participates in astronomical observation and study outside of a purely professional academic role in astronomy.
*   **Writer:** He is credited as an author, with works cataloged in major databases.

### Digital Footprint and Identifiers
Tsuruhama maintains a specific online identity often associated with the handle or alias "Tsuruchan" (つるちゃん). His verified online presence and identifiers include:
*   **Websites:**
    *   Main Site: `https://turupura.com/index.html`
    *   FAQ: `https://turupura.com/faq/menu.htm`
    *   Site Map: `https://turupura.com/site.html`
*   **Library & Academic IDs:**
    *   NDL Authority ID: 00933853
    *   CiNii Research ID: 1140000791601383936
    *   NACSIS CAT Author ID: DA15948089
    *   VIAF ID: 256299946
*   **Commercial & Knowledge Graphs:**
    *   Amazon Author ID: B004LUCTD6
    *   Google Knowledge Graph ID: /g/11mvsyrzh

## References

1. CiNii Research
2. [Source](https://id.ndl.go.jp/auth/ndlna/00933853)
3. [Source](https://turupura.com/introduct/author.html)